From harish at vt.edu Wed Apr 1 11:56:36 2015 From: harish at vt.edu (Harish Veeramani) Date: Wed, 1 Apr 2015 11:56:36 -0400 Subject: [MSA-talk] Final Reminder - Session 13C: Environmental Impacts and Remediation of Mine, Fuel and Energy Extraction Processes Message-ID: Dear Colleagues, Apologies for multiple postings. The deadline to submit abstracts for Goldschmidt 2015 is tomorrow April 02, 2015. Please consider submitting your abstracts to Session 13C: Environmental Impacts and Remediation of Mine, Fuel and Energy Extraction Processes Keynote: Peter Burns (University of Notre Dame) Invited Speakers: Maxim Boyanov (Argonne National Lab), Guillaume Morin (CNRS) and Matt Lindsay (University of Saskatchewan) -------------------------------------- 13C: Environmental Impacts and Remediation of Mine, Fuel and Energy Extraction Processes Convenors: Yuheng Wang (EPFL), Harish Veeramani (University of Waterloo) & Daniel Alessi (University of Alberta). Mine, fuel and energy extraction processes such as traditional and unconventional oil and natural gas recovery, ore mining, and perceived ?green? technologies such as solar and wind power come with inherent environmental footprints. These extraction processes may lead to the contamination of air, soils, aquifers and aquatic ecosystems, and mandate remedial actions. Knowledge of the environmental risks and remedial costs of various resource extraction processes is critical to making informed decisions about their use. In this session, we invite submissions that analyze the environmental impacts of energy extraction processes at the global, regional, or local scale, as well as laboratory or field-based contaminant remediation studies related to energy extraction and mining using interdisciplinary and state-of-the-art (bio)geochemical analytical and/or modeling methods. -------------------------------------- Deadline to submit abstracts is April 2nd, 2015 (http://goldschmidt.info/2015/abstracts). We look forward to seeing you in Prague. Sincerely, Harish Veeramani Daniel Alessi and Yuheng Wang -- Harish Veeramani, Ph.D. Department of Earth & Environmental Sciences University of Waterloo 200 University Avenue West Waterloo, Ontario Canada N2L 3G1 Phone: (519) 888-4567, Ext: 37285 Email: harish.veeramani at uwaterloo.ca From mm2457 at cornell.edu Wed Apr 1 12:04:14 2015 From: mm2457 at cornell.edu (Mainak Mookherjee) Date: Wed, 1 Apr 2015 16:04:14 +0000 Subject: [MSA-talk] =?windows-1252?q?Goldschmidt_Conference_2015-_25d=3A_P?= =?windows-1252?q?hysics_and_Chemistry_of_Earth_Materials_=96_Insights_fro?= =?windows-1252?q?m_Simulations_and_Experiments?= Message-ID: <1C88A7B2-EE58-4A32-91DE-EC5CB778A393@cornell.edu> Dear All, Apologies for multiple postings. We would like to invite you to contribute to the following session at the 25th Goldschmidt Conference 2015 in Prague (August 16-21). The abstract deadline is April 2, 2015. The details of our session could be found below and in the link (http://goldschmidt.info/2015/program/programViewThemes) 25d: Physics and Chemistry of Earth Materials ? Insights from Simulations and Experiments Convenors: Mainak Mookherjee, Sandro Jahn, Jun Tsuchiya, Dipta Ghosh Keynote: Renata Wentzcovitch (University of Minnesota) Constraints on elasticity, equations of state, and transport properties of Earth materials at pressure and temperature conditions relevant to the Earth's interior are crucial for understanding the structure, composition, and dynamics of the Earth. Recent progress in both computational and experimental methods have been shedding valuable insights into these parameters. This session aims at bringing together researchers in the fields of solid Earth geochemistry and geophysics as well as from computational and experimental mineral physics. We welcome contributions based on first principles simulations, experiments, and application of mineral physics results aimed at understanding better the dynamics of the deep Earth. best wishes Jun, Dipta, Sandro, and Mainak ---------------------------------------------------------------------------- Mainak Mookherjee Research Scientist Earth and Atmospheric Sc. Cornell University Ithaca, NY, USA Phone:+001-617-417 8755 (cell) Email: mm2457 at cornell.edu Email: mainak.mookherjee at gmail.com URL:http://www.geo.cornell.edu/Research_Staff/mm2457/ ---------------------------------------------------------------------------- -------------- next part -------------- An HTML attachment was scrubbed... URL: From nross at vt.edu Wed Apr 1 12:18:50 2015 From: nross at vt.edu (Ross, Nancy) Date: Wed, 1 Apr 2015 16:18:50 +0000 Subject: [MSA-talk] Goldschmidt Conference 2015- Session 14d: : Reaction Mechanisms, Rates and Transport Processes in Minerals, Glasses and Melts Message-ID: Dear All In case you weren't aware, the deadline for submitting abstracts to the 2015 Goldschmidt meeting is fast approaching: April 2, 2015 . We draw your attention to Session 14d: Reaction Mechanisms, Rates and Transport Processes in Minerals, Glasses and Melts Convenors: David Cole (Ohio State Univ), Nancy Ross (Virginia Tech) Description: Geochemical processes at mineral-water, mineral-gas and mineral-melt interfaces directly affect a number of key geochemical processes such as contaminant fate, nutrient availability, aerosol formation and growth, photochemical reactions, nanoparticle aggregation and dispersion, chemical weathering, the composition of natural waters, hydrothermal alteration, and element and isotopic redistribution among melts, minerals and fluids. Indeed, energy and mass transport observed in nature are controlled by processes occurring at interfaces - grain boundaries, within pores or along dislocations or fractures. In this session we seek contributions that provide new molecular- to microscopic insight into the properties and dynamics of interfacial reactions relevant to geochemical conditions ranging from surficial to the deep earth. Of particular interest is the behavior of water, dissolved ions, molecules, or gases at mineral surfaces, the structure and properties of the interfacial region, surface charging phenomena, interparticle interactions, nanoscale confinement effects on fluids and mineral reactions, nucleation from gas and aqueous phases, heterogeneous catalysis and transport within minerals and/or melts. Beside spectroscopic and theoretical studies we also welcome novel thermodynamic and kinetic approaches to describe and predict interfacial processes. Keynote Speaker: Paul Fenter, Argonne National Laboratory To submit an abstract, got to http://goldschmidt.info/2015/abstracts. Thanks and best regards, Nancy Nancy L. Ross Professor and Head Department of Geosciences Virginia Tech Blacksburg, VA 24061 USA -------------- next part -------------- An HTML attachment was scrubbed... URL: From Johanne.Caron at ete.inrs.ca Wed Apr 1 17:06:05 2015 From: Johanne.Caron at ete.inrs.ca (Caron Johanne) Date: Wed, 1 Apr 2015 17:06:05 -0400 Subject: [MSA-talk] MAC-SGA CO-SPONSORED SHORT COURSE - MONTREAL, QC, CANADA - Short Course entitled: "The Geology and Geochemistry of Uranium and Thorium deposits" - Please note change of dates from previous announcement Message-ID: MINERALOGICAL ASSOCIATION OF CANADA - SOCIETY FOR GEOLOGY APPLIED TO MINERAL DEPOSITS SHORT COURSE MAC-SGA CO-SPONSORED SHORT COURSE - MONTREAL, QC, CANADA May 2-3, 2015, prior to the Joint Assembly MAC and SGA are co-sponsoring a pre-conference short course entitled: "The Geology and Geochemistry of Uranium and Thorium deposits" Convened by Michel Cuney (CNRS) and Kurtis Kyser (Queen's University) and co-sponsored by Mineralogical Association of Canada (MAC) and Society for Geology Applied to Ore Deposits (SGA), this short course will be held at the Palais des congr?s de Montr?al immediately before the 2015 Joint Assembly. Despite the lack of interest in uranium as a commodity during the past few years and the loss of expertise during the previous downturn beginning 30 years ago, new ideas and technologies developed over the past 7 years have resulted in an enhanced understanding of the formation of uranium deposits. These have allowed researchers to quantify models for all types of deposits and, thus to re-classify deposits in relation to both their occurrence and likely genesis. The purposes of this short course are to highlight the research that can be integrated into refining exploration strategies for uranium and also discuss new developments in thorium deposits as a future energy resource as it will become an increasingly important by-product of REE mining. The short course will consider geotectonic contexts and models of different types of uranium deposits and the mechanisms that control their genesis, relating source, transport, driving forces deposition and preservation, and how these can be used in more efficient uranium exploration and remediation. The course will last for 1.5 days, starting two days prior to the GAC-MAC-CGU-AGU meeting. Registration will occur through the Joint Assembly website. For more information, download the promotional flyer. Johanne Caron- Business Manager Mineralogical Association of Canada 490, rue de la Couronne Qu?bec, QC G1K 9A9 Phone; (418) 653-0333 Fax : (418) 653-0777 Email : jcaron at mineralogicalassociation.ca www.mineralogicalassociation.ca -------------- next part -------------- An HTML attachment was scrubbed... URL: From Johanne.Caron at ete.inrs.ca Wed Apr 1 17:30:06 2015 From: Johanne.Caron at ete.inrs.ca (Caron Johanne) Date: Wed, 1 Apr 2015 17:30:06 -0400 Subject: [MSA-talk] MAC SPONSORED BERRY SUMMER SCHOOL - MONTREAL, QC, CANADA : "Applications of TEM-FIB-SEM methods to geomaterials" Message-ID: MAC SPONSORED BERRY SUMMER SCHOOL - MONTREAL, QC, CANADA May 1-3, 2015, prior to the Joint Assembly MAC is sponsoring a pre-conference Berry summer school entitled: "Applications of TEM-FIB-SEM methods to geomaterials" Convened by Hojatollah Vali and Robert F. Martin of McGill University, and Luiz Morales and Richard Wirth of GFZ German Research Centre for Geosciences, this course will be held at the McGill University Facility for Electron Microscopy Research in Montreal, immediately before the 2015 Joint Assembly. The latest generation of Focused Ion Beam-Extreme High Resolution Scanning Electron Microscope (FIB-SEM) and Transmission Electron Microscope (TEM) are the ideal tools to study geomaterials at the micro- and nanoscale in 2D and 3D including chemical composition and crystal structure. The Berry Summer School will provide an overview of the theory and practical applications of FIB-SEM and TEM in the geosciences using state-of-the-art electron microscopes available at the McGill University Facility for Electron Microscopy Research (FEMR). Participants will have the opportunity to discover the latest techniques in sample preparation and imaging relevant to the Canadian Geoscience community. Workshop content includes: * high-resolution SEM imaging using the in-column detector (ICD) * serial SEM imaging of FIB-prepared cross-sections of soft and hard materials * 3D FIB tomography and reconstruction of materials * 3D energy dispersive spectroscopy * direct detection device (DDD) and phase plate (contrast) technology in TEM Do not delay as enrollment is limited to 30 participants. For more information, download the promotional flyer; and please post at your institution or forward to colleagues/students you expect would be interested in participating. Registration will occur through the Joint Assembly website; attendance at the Joint Assembly is encouraged but not required for participation in the short course. The Joint Assembly Early Registration deadline is Wednesday, April 8, 11:59 P.M. EDT., which is only one week away! Best regards, Johanne Caron- Business Manager Mineralogical Association of Canada 490, rue de la Couronne Qu?bec, QC G1K 9A9 Phone; (418) 653-0333 Fax : (418) 653-0777 Email : jcaron at mineralogicalassociation.ca www.mineralogicalassociation.ca -------------- next part -------------- An HTML attachment was scrubbed... URL: From amoller at ku.edu Thu Apr 2 00:33:11 2015 From: amoller at ku.edu (Moeller, Andreas) Date: Thu, 2 Apr 2015 04:33:11 +0000 Subject: [MSA-talk] Goldschmidt session 16f: Quantitative provenance studies of clastic sedimentary rocks Message-ID: Dear colleagues, a final call for submissions for those interested in provenance and crustal recycling studies. Session 16f ?Quantitative provenance studies of clastic sedimentary rocks? is part of Theme 16 "Petrology and Process: Micro to Macro" at the Goldschmidt 2015 conference (Prague, 16-21 August 2015) Provenance studies encompass a variety of detrital minerals and data on those minerals, including grain size, trace element chemistry, and isotopic data. In addition to these topics, this session welcomes statistical and modeling treatments of these data to identify source areas and sedimentary processes. The overall goal of the session is to explore the integration of geochronology, petrography, geochemistry, statistics and modeling in modern provenance studies. Confirmed keynote speaker is Pieter Vermeesch (University College, London) We invite all of you working on related topics to submit an abstract for this session. http://goldschmidt.info/2015/abstracts The deadline for abstract submission is April 2nd, 2015. See you in Prague, Andreas M?ller (The University of Kansas, USA) Yani Najman (y.najman at lancaster.ac.uk) Sergio And? (sergio.ando at unimib.it) ?????????????? Dr. Andreas Moeller The University of Kansas Department of Geology - IGL Lawrence, KS 66045 - USA - +1 (785) 864-1447 http://www.geo.ku.edu/m?ller-andreas -------------- next part -------------- An HTML attachment was scrubbed... URL: From wendy.panero at gmail.com Thu Apr 2 13:51:31 2015 From: wendy.panero at gmail.com (Wendy Panero) Date: Thu, 2 Apr 2015 13:51:31 -0400 Subject: [MSA-talk] 2016 MSA Award Message-ID: Dear Colleagues, The Mineralogical Society of America is now accepting nominations for the 2016 Mineralogical Society of America Award. The award recognizes outstanding published contributions to the science of mineralogy (broadly defined) by relatively young individuals or individuals near the beginning of their professional careers. The work must have been accomplished either [1] before the age of 35 or [2] within 7 years of the awarding of the terminal degree (a two year extension for interruptions in the nominee's career is possible). More information regarding qualifications and the nomination procedure can be found at: http://www.minsocam.org/MSA/Awards/MSA_Award.html The completed nomination package must be received by the committee chair by June 1, 2015. *Wendy Panero* Chair MSA Award Committee Ohio State University School of Earth Sciences 375 Mendenhall Labs 125 S. Oval Mall Columbus, OH 42310-1308 USA ph: +1 (614)-292-6290 e-mail: panero.1 at osu.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: From n.bolfan at opgc.univ-bpclermont.fr Fri Apr 3 09:14:13 2015 From: n.bolfan at opgc.univ-bpclermont.fr (Nathalie Bolfan) Date: Fri, 03 Apr 2015 15:14:13 +0200 Subject: [MSA-talk] Five posts in Clermont-Ferrand Message-ID: <551E9225.7040303@opgc.univ-bpclermont.fr> /*Clermont-Ferrand Centre for Volcano Research*/ *Seeking world-class PhD students, post-doctoral research fellows and technical engineers in the field of volcanic and magmatic systems* The ClerVolc consortium involves six laboratories of Blaise Pascal University in Clermont-Ferrand, France (Collaboratrices of Earth Science ?Magmas et Volcans?, Particle Physics, Physical Meteorology, Social and Cognitive Psychology, Mathematics, Computer Science), the Observatoire de Physique du Globe at Clermont-Ferrand, and the French Geological Survey (BRGM). The consortium, which is led by P. Schiano director, T. Druitt scientific coordinator, has received funding for a collaborative research programme from the French government ?Laboratories of Excellence? initiative. The programme addresses fundamental questions in the field of magma generation, volcano dynamics, volcanic hazards and volcanic risk. We are seeking candidates for five projects, to start in October of 2015. The projects are at post-doctoral (PDoc) and doctoral (PhD) levels. Postdoctoral projects are divided into those with that are strongly research-oriented (PDocRes), and those with important components of technical development (PDocTech). Details of the projects, post profiles, salaries, contact addresses, application procedures and deadlines may be found at the following link: http://clervolc.univ-bpclermont.fr/sites/clervolc.univ-bpclermont.fr/IMG/pdf/Clervolc_ad_information.pdf In the event of additional enquiries or problems, please contact ClerVolc administration manager Socheata Sean (Socheata.Sean at univ-bpclermont.fr). ? Technical developments for a muon telescope suitable for imaging an active volcano. C. Carloganu (LPC) and P. Labazuy (LMV). PDocTech. ? Probing the mechanics governing the growth, evolution and eruption of large silicic magma bodies. T. Menand and J.L. Froger (LMV). PDocRes. ? Universal calibration of Raman spectroscopy for the analysis of volatiles in glasses of variable composition. N. Bolfan (LMV). PDocRes. ? Kinetics of magmatic processes: Formation and morphological evolution of phenocryst-hosted melt inclusions. D. Laporte and P. Schiano (LMV). PDocRes. ? Pyroclastic density currents: continuous spectrum or distinct endmembers? O. Roche (LMV), L. Chupin and T. Dubois (LM) PhD. LMV: Laboratoire Magmas et Volcans; LPC: Laboratory of Particle Physics; LM: Laboratory of Mathematics -------------- next part -------------- A non-text attachment was scrubbed... Name: n_bolfan.vcf Type: text/x-vcard Size: 167 bytes Desc: not available URL: From akavner at ucla.edu Mon Apr 6 16:56:49 2015 From: akavner at ucla.edu (Abby Kavner) Date: Mon, 6 Apr 2015 13:56:49 -0700 Subject: [MSA-talk] Fall AGU Special Session Proposal Deadline--April 22nd Message-ID: Dear MSA members, MSA-members are strongly encouraged to submit special session proposals with mineralogical interest to your relevant AGU section and/or focus group, and co-sponsored by the MSA. The deadline for special session proposals for the Fall AGU meeting is Wednesday April 22nd. You must be an AGU member to be the primary convener of a special session proposal. All MSA members can attend the Fall AGU meeting at member registration rates. ****** Deadlines and links: April 22nd: Special session proposals due http://fallmeeting.agu.org/2015/sessionproposals/ June 10-August 5th Abstract Submission http://fallmeeting.agu.org/2015/ July 2015 Registration and Housing open Meeting: 14-18 December 2015, Moscone Center ***** Abby Kavner Professor Earth, Planetary, and Space Sciences Department University of California, Los Angeles http://akavner.bol.ucla.edu 310-206-3675 -------------- next part -------------- An HTML attachment was scrubbed... URL: From dhummer at epss.ucla.edu Tue Apr 7 17:31:22 2015 From: dhummer at epss.ucla.edu (Daniel Hummer) Date: Tue, 07 Apr 2015 14:31:22 -0700 Subject: [MSA-talk] Final call for special section "Chemistry and Mineralogy of Earth's Mantle" Message-ID: <55244CAA.3060700@epss.ucla.edu> Dear Colleagues, We would like to announce a final call for papers in the special section of American Mineralogist titled "Chemistry and Mineralogy of Earth's Mantle". Following is a description of this collection: "This section provides a collection of papers relating to the chemical composition and properties of both the upper and lower mantle. Submissions may be experimental or theoretical in nature, and topics may include concentrations of major and minor elements, bulk mineralogy, phase partitioning, diffusion, and the influence of minor elements on properties such as density, bulk modulus, shear modulus, seismic velocities, anisotropy, and thermal/electrical properties. We are especially interested in papers relating to the incorporation and behavior of minor elements and volatiles into mantle phases, and their impact on rheological properties. Papers undergo normal peer review, conducted by Special Collection Associate Editors Daniel Hummer and Katherine Crispin. Papers will be published on an ongoing basis, with a link at the American Mineralogist website to access the entire collection." If you have a paper in preparation that is close to submission, and are interested in submitting to this special section, please contact associate editors Daniel Hummer (dhummer at epss.ucla.edu) or Katherine Crispin (kcrispin at ciw.edu). Since we will be closing submissions soon, only those who have been in contact with one of the associate editors will be included in the final version of the collection. Thanks for your attention, and thanks to our authors for all the wonderful papers we've received! Sincerely, Daniel Hummer University of California Los Angeles dhummer at epss.ucla.edu Katherine Crispin Carnegie Institution of Washington kcrispin at ciw.edu -- Daniel R Hummer Postdoctoral Scholar, Mineralogy and Crystallography Department of Earth, Planetary and Space Sciences University of California Los Angeles dhummer at epss.ucla.edu Phone: (814) 321-8859 Fax: (310) 825-2779 -------------- next part -------------- An HTML attachment was scrubbed... URL: From J.Pickles at exeter.ac.uk Thu Apr 9 07:56:51 2015 From: J.Pickles at exeter.ac.uk (Pickles, Joe) Date: Thu, 9 Apr 2015 11:56:51 +0000 Subject: [MSA-talk] Critical Materials Workshop - London Message-ID: Dear All, I would like to draw your attention to a one day workshop on Critical Materials being organised by AMG, a special interest group of the Mineralogical Society of Great Britain and Ireland. The meeting will be held at the Natural History Museum in London on the 17 June 2015 and is free to attend. We welcome abstracts for talks and posters on any topic under the umbrella of critical materials as denied by the E.U. in 2014. This includes, but is not limited to, REE, PGE, graphite, fluorspar etc. We are pleased to announce key note talks by Olivier Beyssac, CNRS IMPMC Paris and a representative from Wolf Minerals. For more information please see http://www.minersoc.org/critical-materials.html or email me. Cheers, Joe -------------------------------------------------------------------------------------- Joe Pickles Senior Technician, Camborne School of Mines Tel:+44 (0)1326 371851 www.emps.exeter.ac.uk/csm Daphne du Maurier Building 3.125, University of Exeter, Penryn Campus, Penryn, TR10 9FE, Cornwall. -------------- next part -------------- An HTML attachment was scrubbed... URL: From morales at gfz-potsdam.de Thu Apr 9 09:01:06 2015 From: morales at gfz-potsdam.de (Luiz Morales) Date: Thu, 9 Apr 2015 15:01:06 +0200 Subject: [MSA-talk] Third EGU Summer School References: <1B403CFB-382E-4A33-933B-D3025C43ABF1@unipd.it> Message-ID: <4985F78F-C126-4C66-B5F6-B177DBA77208@gfz-potsdam.de> On the behalf of Giorgio Pennacchioni and Neil Mancktelow all the best Luiz ****************************************************************************** We are very pleased to announce opening of pre-registration for the Third EGU Summer School Structural Analysis of Crystalline Rocks Nevessee area/Bruneck - South Tyrol, Italy from 23rd to 29th August 2015 The summer school is specifically aimed at PhD students, Post-Docs and early-career researchers. Detailed information on the summer school can be found at http://www.geoscienze.unipd.it/egu-summerschool/index.html with best regards Giorgio Pennacchioni and Neil S. Mancktelow P.S.: we apologize for multiple posting. _____________________________ Giorgio Pennacchioni Dipartimento di Geoscienze Via Gradenigo 6 35131 Padova Italy office +39 049 8279106 mobile +39 3386718488 email: giorgio.pennacchioni at unipd.it -------------- next part -------------- An HTML attachment was scrubbed... URL: From sebastien.merkel at univ-lille1.fr Fri Apr 10 08:27:42 2015 From: sebastien.merkel at univ-lille1.fr (=?UTF-8?B?U8OpYmFzdGllbiBNZXJrZWw=?=) Date: Fri, 10 Apr 2015 08:27:42 -0400 Subject: [MSA-talk] AGU Mineral and Rock Physics Awards Message-ID: <5527C1BE.2040804@univ-lille1.fr> Dear all, This is a reminder that nominations for both AGU Mineral and Rock Physics Awards are due by April 15, 2015. The Mineral and Rock Physics (MRP) focus group of the American Geophysical Union sponsors two awards: - a Graduate Research Award, to recognize promising young scientists for outstanding contributions achieved during their Ph.D. research, - an Early Career Award (no more than six years post-terminal degree), in recognition of outstanding contributions in the broadly defined area of Mineral and Rock Physics. Details on the awards and the nomination procedure are on the MRP website: http://sfg.agu.org/mrp/awards-and-honors/ Best regards, Phil Skemer, MRP President Razvan Caracas, Representative for the Graduate Research Award S?bastien Merkel, Representative for the Early Career Award From B.W.D.Yardley at leeds.ac.uk Tue Apr 14 10:54:51 2015 From: B.W.D.Yardley at leeds.ac.uk (Bruce Yardley) Date: Tue, 14 Apr 2015 15:54:51 +0100 Subject: [MSA-talk] ECROFI 2015 - Sorby Conference on Fluid and Melt Inclusions: Final deadlines Message-ID: Dear Colleagues The Sorby/ECROFI conference on fluid and melt inclusions is fast approaching - http://www.see.leeds.ac.uk/research/igt/working-groups/ecrofi-conference/ The conference itself is from 27-29 June, with a short course on 25-26 June and a Field Trip to the North Pennine mining district on June 30th. We have extended the deadlines for submission of abstracts to April 24th. Registration will remain open but please register as soon as possible as we will not be able to guarantee accommodation for people registering after the 24th April, and a late registration fee will apply. We look forward to seeing you in Leeds! Bruce Yardley David Banks Jason Harvey -------------- next part -------------- An HTML attachment was scrubbed... URL: From isabelle.daniel at univ-lyon1.fr Wed Apr 15 04:36:17 2015 From: isabelle.daniel at univ-lyon1.fr (DANIEL ISABELLE) Date: Wed, 15 Apr 2015 08:36:17 +0000 Subject: [MSA-talk] Call for nominations: MSA leadership positions open, June 1st, 2015 due date Message-ID: <820FD69E-E97E-4F68-B1BC-65275B27E648@univ-lyon1.fr> Dear MSA Members, The MSA nominating committee for officers is now requesting nominations for the following leadership positions, whose terms start in 2017, after the election in 2016: - Vice President - Treasurer - Councilors Please consider nominating colleagues for these important roles in our society. Email nominations to Isabelle Daniel by June 1st, 2015 Include a brief text explaining why the individual nominated is suitable for the specified position. For the position of Councillor, please indicate whether the nominee?s interests are best defined by either: Crystallography/Mineralogy or Petrology/Geochemistry. If you have any questions, please don?t hesitate to contact me. Many thanks in advance, Isabelle, on behalf of the committee - - - - - - - - - Isabelle Daniel Universit? Claude Bernard Lyon1 Observatoire de Lyon Laboratoire de g?ologie de Lyon - UMR 5276 Bat G?ode - R3 43 bd du 11 novembre 1918 69622 Villeurbanne cedex tel: +33 4 72 43 27 35 (UCB) +33 4 72 72 86 98 (ENS) - - - - - - - - - -------------- next part -------------- An HTML attachment was scrubbed... URL: From ktait at rom.on.ca Wed Apr 15 11:47:25 2015 From: ktait at rom.on.ca (Kim Tait) Date: Wed, 15 Apr 2015 11:47:25 -0400 Subject: [MSA-talk] Mineralogy Technician Job, Toronto, Canada Message-ID: <552E4FCD02000056000EFCBF@romfs77.rom.on.ca> Please circulate to anyone that could be interested! We are looking for a full-time technician in mineralogy at the Royal Ontario Museum, Toronto, Ontario, Canada. Further details are here: https://www.rom.on.ca/en/node/13296 Sincerely, Kim Tait Kimberly Tait, PhD Teck Endowed Chair of Mineralogy Royal Ontario Museum Department of Natural History 100 Queen's Park Toronto, Ontario M5S 2C6 Canada email: ktait at rom.on.ca tel.: 416-586-5820 fax: 416-586-5814 . From boriana.mihailova at uni-hamburg.de Thu Apr 16 05:03:56 2015 From: boriana.mihailova at uni-hamburg.de (Boriana Mihailova) Date: Thu, 16 Apr 2015 11:03:56 +0200 Subject: [MSA-talk] Fwd:a summer school on Crystallography in Istanbul! In-Reply-To: <552F67B6.1060202@hacettepe.edu.tr> References: <552F67B6.1060202@hacettepe.edu.tr> Message-ID: <552F7AFC.8010704@uni-hamburg.de> Apologies for multiple posting -------- Forwarded Message -------- ======================================================================= Second Balkan School on Fundamental Crystallography and Workshop on Magnetic Symmetry Dates: 13-19 July 2015 Location: Istanbul Technical University, Istanbul, Turkey Description: The event is intended to teach the fundamentals of crystallography, starting from theoretical group theory and its applications in solid state, and magnetic symmetry. A workshop where the participants can apply the methods taught directly on their cases at hand as well as having the opportunity to present their work* will go in parallel, as part of the school. The school will be held in the Ayazaga campus of the Istanbul Technical University (ITU), Istanbul, Turkey between 13-19 July, 2015. * The works that will be presented are subject to referees' jurisdiction. More information on the school & workshop, including the lecturers and the program is available from the event's website: http://www.cryst.ehu.es/crystr2015/ ======================================================================= -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Emre S. Tasci - http://www.emresururi.com Physics Engineering Hacettepe University 06800 Beytepe / Ankara Turkey -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Bu e-posta mesaji kisiye ?zel olup, gizli bilgiler iceriyor olabilir. Eger bu e-posta mesaji size yanlislikla ulasmissa, icerigini hicbir sekilde kullanmayiniz ve e-postayi siliniz. Hacettepe Universitesi bu e-posta mesajinin icerigi ile ilgili olarak hicbir hukuksal sorumlulugu kabul etmez. The information contained in this communication may contain confidential or legally privileged information. Hacettepe University doesn't accept any legal responsibility for the contents and attachments of this message. The sender does not accept any liability for any errors or omissions or any viruses in the context of this message which arise as a result of internet transmission. From Hauke.Marquardt at uni-bayreuth.de Thu Apr 16 08:44:39 2015 From: Hauke.Marquardt at uni-bayreuth.de (Hauke Marquardt) Date: Thu, 16 Apr 2015 14:44:39 +0200 Subject: [MSA-talk] GeoBerlin2015 session "Properties of Earth Materials and Constraints on Mantle Flow" - please submit your abstract! Message-ID: <552FAEB7.7060201@uni-bayreuth.de> /- ///we kindly apologize for multiple postings/ - /Dear all, we would like to invite submissions to our interdiciplinary session in the theme "mantle dynamics / driving forces" at this year's DGGV and DMG joint meeting "GeoBerlin2015" Meeting in Berlin (October, 04.-07.): * "Properties of Earth Materials and Constraints on Mantle Flow (A4-03)" * _Session Description:_ Heat flow in Earth?s mantle enables viscous flow of mantle material over long time scales and drives plate tectonic convection. Volcanism, and the continuous creation and subduction of oceanic lithosphere regulate the exchange rates of energy and material between the Earth?s interior and surface/atmosphere. Geophysical observations provide increasingly detailed constraints on flow patterns in the mantle. For instance, seismic anisotropy in tectonically active regions in the mantle, such as spreading zones or boundary regions, is most likely related to preferred alignment of crystallites caused by the prevalent tectonic stress. Furthermore, tomographic images of fast and slow seismic wave speeds in the mantle are often associated with descending slabs and ascending plumes. This interpretation, however, remains ambiguous as varying wavespeeds could be caused by factors such as anomalous temperatures, partial melting, deformation associated with high dislocation density, or the presence of water. A detailed interpretation of these large-scale geophysical observations in terms of mantle flow patterns therefore should be synergized with information about the physical and chemical properties, and behaviour of Earth?s materials under high temperature and pressure conditions in the laboratory or in computer simulations. In this session, we welcome contributions on the properties of mantle materials that relate to our understanding of material flow in the mantle. *Invited Speaker: Ulrich Faul, MIT* Submission is possible until *28.04.15***at*http://www.geoberlin2015.de/abstracts.html *Many thanks, Hauke Marquardt (BGI Bayreuth) Robert Farla (BGI Bayreuth) Patrick Cordier (Universit? Lille 1) ------------------------------------- Dr. Hauke Marquardt DFG Emmy Noether-Research Group www.depict-group.org/geomax Bayerisches Geoinstitut BGI University of Bayreuth 95440 Bayreuth, Germany Tel: +49 (0)921/55-3718 Fax: +49 (0)921/55-3769 Email: Hauke.Marquardt at uni-bayreuth.de -------------------------------------- -------------- next part -------------- An HTML attachment was scrubbed... URL: From kputirka at csufresno.edu Thu Apr 16 17:13:30 2015 From: kputirka at csufresno.edu (Keith Putirka) Date: Thu, 16 Apr 2015 17:13:30 -0400 (EDT) Subject: [MSA-talk] Notable Papers in Am Min, Mar-Apr, 2015 In-Reply-To: <628909207.28097550.1429218677057.JavaMail.zimbra@csufresno.edu> Message-ID: <576663955.28099486.1429218810308.JavaMail.zimbra@csufresno.edu> Dear MSA Members, Below are the Editors' picks of notable articles published this month in the American Mineralogist: Journal of Earth and Planetary Materials . You may view the American Mineralogist Noted Papers at http://www.minsocam.org/MSA/Ammin/AM_Notable_Articles.html , or click on the page numbers below. If you are not already logged into GeoScience World, then from the American Mineralogist menu on http://www.minsocam.org/ , go to "Subscriber Access" - look for and select the "portal page" link, to access GeoScience World. Once at the portal page, enter your user name (e-mail address), and your password (membership number). Sincerely, Keith Putirka Ian Swainson Editors Selections, April 2015 Highlights and Breakthroughs & Invited Centennial Articles Constraints on Martian Habitability On page 669 of this issue, Javier Cuadros reviews a new open access paper by Bristow et al. ( page 824) on martian clay minerals. As Cuadros explains, compared to remote infrared data, new XRD measurements of clay minerals and Fe-oxides from the Curiosity mission may complicate our picture of water retention and water-driven reactions on the martian surface. The new data indicate low water/rock ratios, but push to later dates the time interval for water-rock interaction on the martian surface. Bristow et al.'s study also indicates that the weathering processes that created martian clays occurred over periods of thousands to hundreds of thousands of years, placing a minimum time interval on which life could evolve. Bristow et al. also point to H2 production in redox reactions may provide at least a potential energy source for biologic activity. Physics and Mineralogy On page 671 of this issue Wilfried Schranz provides an overview of our invited Centennial article in the February-March issue by Ekhard Salje ( page 342 ). Salje shows that physicists and mineralogists are pursuing non-intersecting lines of research in regard to microstructural mineral features, such as twins, holes and tweeds (the latter being the precursors to twin structures). Physicists are making use of such defects to produce new electronic devices, but without the benefit of understanding of the mineralogical context in which such defects occur. In the mean time, however, breakthroughs with regard to super-conductivity and ferro-elastic behavior has led to new physics-derived insights that can aid mineralogists in understanding transport and deformation properties of natural materials. The Importance of Bubbles On page 672 of this issue Jacob Lowenstern provides a review of Moore et al. ( page 806 ), who examine the effect of vapor bubbles on estimates of volatile concentrations in melt inclusions (MI). Bubbles are common in MI and are thought to occur as MI are cooled and decompressed along an isochore (with minerals walls serving as a fixed-volume container). Moore et al. show that bubbles contain a significant fraction of low-solubility volatiles, such as CO 2 , comprising anywhere from 40-90% of the total CO 2 budget for MI. For CO 2 -rich systems, the volatile budgets of bubbles are ignored at the risk of confusing pre-eruptive degassing conditions with post-entrapment CO 2 melt/vapor fractionation. Mineralogy and a sustainable future On page 674 of this issue, Alexandra Navrotsky provides a remarkably fitting overview of how Mineralogy segues into various disciplines of interest to society. For example, she compares materials science advances in vapor deposition and the precipitation of phases from the early solar system. As another example, she notes how mineralogists have developed high- P equations of state that are useful to materials scientists (to understanding bonding), but that advances in understanding perovskite defect structures in the materials? sciences may also provide new analog structures for studying water sequestration in deep planetary interiors. As she concludes, partnerships between mineralogists, materials scientists, and industry are needed to facilitate this natural research synergy, and should enable advances on the most important problems, and place our society on an environmentally sustainable footing. A Theoretical Approach to Mineralogy On page 696 of this issue, Frank Hawthorne presents a fascinating approach to determining why some atomic arrangements are stable while others are not. An intriguing aspect of this work is the application of bond topology to structural units in minerals. For example, oxysalt structures can be divided into a strongly bonded structural units , which act as Lewis bases, and weakly bonded interstitial units , which act as Lewis acids, and the corresponding basicities and acidities can be calculated. Stable structures are those where Lewis acidities and basicities match. As an example, Hawthorne shows how this theory predicts stable stoichiometries for Mg N (PO 4 )(OH) m ; only when N=2 and m {less than or equal to} 2 is the valence-matching principle satisfied, and these are the only stoichiometries observed in minerals. For oxysalts in general, Hawthorne also shows why stoichiometries with octahedrally coordinated to tetrahedrally coordinated cations in the range 0.25 to 4.0 are stable, whereas stoichiometries outside this range do not occur. This theoretical approach to Mineralogy has the potential to explain atomic arrangements and chemical compositions of terrestrial planetary objects, and with further development, may provide an understanding of the relation between atomic arrangements and their thermodynamic properties. And from our "Regular Articles" Collection... Zircons Record Exhumation, not UHP Conditions On page 897 of this issue, Kohn et al. model Zr budgets and zircon growth along common P-T paths under a range of P-T conditions. Kohn et al. find that zircon modal abundances can best be predicted by considering Zr solubility in co-existing, low-Zr phases. Kohn et al. find that most zircon growth is expected to occur upon exhumation and cooling, rather than under ultrahigh-pressure (UHP) metamorphic conditions. Identifying zircons that record prograde metamorphism thus faces serious challenges. A key finding, then, is that zircon ages, especially bulk mineral TIMS dates, are unlikely to record the time of peak metamorphism, but should rather systematically underestimate the age of peak UHP metamorphism. Atom-by-atom mapping of minerals On page 852 of this issue, Steve Parman presents an application of atom probe tomography (APT) to a natural sample of isoferroplatinum. As noted by Parman, APT is more commonly used in the materials sciences, but as demonstrated by this work, can also be applied to more compositionally complex natural crystals. The APT provides an atom-by-atom mapping providing both compositional, isotopic and structural information. It is not clear that APT can yet be applied to analyze covalently bonded silicates, but in the mean time, oxides, metals, and sulfides provide potentially useful targets, and if the silicate problem is solved, APT may serve to revolutionize the way minerals are analyzed and understood. Keith Putirka Dept. Earth & Env. Sciences California State University, Fresno 2576 E. San Ramon Ave. M/S ST24 93740 559-278-4524 kputirka at csufresno.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: From Katharina.Marquardt at uni-bayreuth.de Fri Apr 17 02:36:51 2015 From: Katharina.Marquardt at uni-bayreuth.de (Katharina Marquardt) Date: Fri, 17 Apr 2015 08:36:51 +0200 Subject: [MSA-talk] 1 PhD position - Element distribution in grain boundaries Message-ID: <5530AA03.8060407@uni-bayreuth.de> Dear All, Please forward the below offer of a 3 year PhD position to potential candidates. Many thanks, Katharina Marquardt *1 PhD position - Element distribution in grain boundaries* ** *Bayerisches Geoinstitut, Universit?t Bayreuth (Germany)* We search for a PhD candidate who is highly motivated to perform basic research with good communication skills in English. Basic knowledge in programming would be helpful. A master degree in Geology, Mineralogy, Physics, Chemistry and Engineering or equivalent is perquisite for this position. *The project:* Bulk physical properties of rocks such as elasticity, strength, or electrical conductivity critically depend on the physical, chemical and structural properties of grain boundaries. The main focus of this PhD project is on the experimental determination of diffusion rates and element distribution in grain boundaries of silicates, with a focus on olivine. Diffusional mass transport in grain and interphase boundaries (see figure) of rocks can be the dominant mechanism for deformation and chemical equilibration of rocks and hence drives geodynamic processes. The efficiency of transport along grain and interphase boundaries depends on various factors such as the volume fraction of grain boundaries and the partitioning behavior of elements between grain boundaries and crystal volume. Experimental studies on grain boundary diffusion in Earth materials are scarce, mostly because of experimental limitations. In this project we apply a novel approach combining thin film technology and high resolution analytical methods to improve and quantify our understanding of the physical and chemical properties of grain boundaries. A focus of this project is the effect of the orientation of grain boundaries on diffusion rates since this may be responsible for the lattice-preferred orientations of deformed upper mantle rocks dominated by olivine. *The offer:* The candidate will be trained to work independently combining laboratory experiments and direct analytical methods with numerical modelling of diffusion data and directed to identify and solve specific problems and questions. He/she will get insight into state-of-the-art techniques such as pulsed laser deposition, electron microscopy, ranging from SEM, EBSD to the usage of focused ion beam (FIB) machining and TEM investigations. The project allows for qualifying for future work in research or industry. The modeling part of this project will be performed in close collaboration with the Ruhr University of Bochum and Dr. R. Dohmen. *The institute:*The Bayerisches Geoinstitut BGI at the University of Bayreuth is equipped with state-of-the-art experimental facilities and offers a unique scientific infrastructure for experimental research at high pressures and high temperatures. The participation in the Graduate School BayNat at the University of Bayreuth allows for acquiring soft skills in various courses offered. More information about BGI can be found at http://www.bgi.uni-bayreuth.de/.The University of Bayreuth is an equal opportunity employer. *How to apply: *Applications including a motivation letter, CV with contact dates of two referees should be sent as a single pdf-file to *Katharina.marquardt at uni-bayreuth.de* ** *Funding: *The project is funded by the German Science Foundation (DFG) -- Dr. Katharina Marquardt Raum 6.1.05 Tel.: +49 (0)921/55-3712 Tel. TEM(Titan)-Lab: +49 (0)921/55-3846 Tel. FIB(Scios)-Lab: +49 (0)921/55-3731 Mobil: +49 (0)178-375-2077 Email: katharina.marquardt at uni-bayreuth.de Email(privat):tinkamarquardt at gmail.com ___________________________________ Bayerisches Geoinstitut Universit?t Bayreuth Universit?tsstra?e 30 95440 Bayreuth -------------- next part -------------- An HTML attachment was scrubbed... URL: From Hauke.Marquardt at uni-bayreuth.de Fri Apr 17 08:46:23 2015 From: Hauke.Marquardt at uni-bayreuth.de (Hauke Marquardt) Date: Fri, 17 Apr 2015 14:46:23 +0200 Subject: [MSA-talk] PhD position at Bayerisches Geoinstitut (BGI), experimental high-pressure/high-temperature research (mineral physics) Message-ID: <5531009F.9060901@uni-bayreuth.de> Dear all, we have an open PhD position at the Bayerisches Geoinstitut in Bayreuth - details are below. Please also forward this email to anyone who may be interested. Thank you, Hauke Marquardt *_ _* *PhD position in experimental high-pressure/high-temperature research at BGI Bayreuth*/__/ */Available Positions:/*PhD position (TV-L13, 65%), 3 years */Time frame:/*Review of applications will begin immediately and continue until the position is filled. */Requirements:/*Completed study of geosciences, materials sciences or experimental physics. The ability to work independently and a strong motivation to conduct basic research. Good oral and written skills in English language. */Highlights:/*The PhD student will carry out forefront research and contribute to the success of a small and dynamic young research group (www.depict-group.org/geomax). The student will work in a highly international and interdisciplinary environment and will gain experience in experimental research at extreme conditions of pressure and temperature using a variety of techniques, both at laboratory facilities at BGI Bayreuth, but also at Synchrotron facilities. The student will also have the opportunity to gain experience in the communication of scientific research to the public.** *//* */Project Summary: /*The project aims at studying the deformation behavior of (Mg,Fe)O ferropericlase, the second most abundant mineral in Earth?s lower mantle, at simultaneously high-pressure and high-temperatures. Measurements will be performed by using synchrotron radial x-ray diffraction in a heated diamond-anvil cell employing a dedicated experimental setup that is now available at the Extreme Conditions Beamline of PETRA III (DESY, Hamburg). The expected outcome will impact on several key questions in geosciences regarding the structure and dynamics of Earth?s lower mantle, including the fate of subducting slabs and the understanding of the D`` layer above the core mantle boundary. More Information about the group?s research can be found at www.depict-group.org/geomax */Institute:/*The research group is part of the Bayerisches Geoinstitut BGI at the University of Bayreuth, which is equipped with state-of-the-art experimental facilities and offers a unique scientific infrastructure for experimental research at high pressures and high temperatures. More information about BGI can be found at http://www.bgi.uni-bayreuth.de/. The planned experiments involve frequent use of synchrotron facilities, mostly PETRA III at DESY in Hamburg. The research project also involves a two-month stay at the Universit? of Lille in France. *//* */Application:/*Applications should consist of a Curriculum Vitae, contact information of two potential referees and a short letter (1-2 pages) outlining the applicant?s scientific interests and motivation to work on a PhD thesis in experimental research at extreme conditions. Applications should be sent as a single pdf-file to *geomax at depict-group.org*. The University of Bayreuth is an equal opportunity employer. You are welcome to contact Hauke Marquardt (hauke.marquardt at uni-bayreuth.de) for further questions about the position. ------------------------------------- Dr. Hauke Marquardt DFG Emmy Noether-Research Group www.depict-group.org/geomax Bayerisches Geoinstitut BGI University of Bayreuth 95440 Bayreuth, Germany Tel: +49 (0)921/55-3718 Fax: +49 (0)921/55-3769 Email:Hauke.Marquardt at uni-bayreuth.de -------------------------------------- -------------- next part -------------- An HTML attachment was scrubbed... URL: From A.W.Bray at leeds.ac.uk Wed Apr 22 07:10:46 2015 From: A.W.Bray at leeds.ac.uk (Andy Bray) Date: Wed, 22 Apr 2015 12:10:46 +0100 Subject: [MSA-talk] UK Minsoc Research in Progress meeting Environmental Mineralogy and Geomicrobiology Message-ID: <7A67C6F61E44F245A0F098B5DD44669705626846BFEE@HERMES8.ds.leeds.ac.uk> Hi All, Registration is now open for the joint Environmental Mineralogy and Geomicrobiology Research in Progress meeting in Leeds on June 24th. For more information visit: http://www.minersoc.org/gmb.html#GMB-EMG-2015 Registration and abstract deadline is June 5th. Cheers, Andy Andy Bray Postdoctoral Research Fellow Cohen Geochemistry, Earth Surface Science Institute, School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK Twitter: https://twitter.com/brayaw Website: http://www.see.leeds.ac.uk/people/a.bray Research Group: http://www.see.leeds.ac.uk/research/essi/cohen-research-group/ +44 (0)1133434696 +44 (0)7746218864 -------------- next part -------------- An HTML attachment was scrubbed... URL: From dharlov at gfz-potsdam.de Thu Apr 23 04:20:09 2015 From: dharlov at gfz-potsdam.de (Dan Harlov) Date: Thu, 23 Apr 2015 10:20:09 +0200 Subject: [MSA-talk] Fwd: [DMG_Diskussion] Geowissenschaftler/in am GFZ References: <5530BDAC.7050508@gfz-potsdam.de> Message-ID: <7E87C5E6-50D8-47C6-BE95-8298DED1BAA7@gfz-potsdam.de> The GFZ is looking for a new person to manage the two electron microprobes here starting in July (see weblink below). Deadline for applications is April 23. Begin forwarded message: > From: Joerg Erzinger > Subject: [DMG_Diskussion] Geowissenschaftler/in am GFZ > Date: April 17, 2015 10:00:44 AM GMT+02:00 > To: dmg_diskussion at lists.spline.inf.fu-berlin.de > > Liebe DMG-Mitglieder, > > unter der u. g. Adresse finden Sie die Ausschreibung einer Stelle f?r die Leitung des Mikrosondenlabors am Deutschen GeoForschungsZentrum in Potsdam. > > Mit besten Gr??en > > > J?rg Erzinger > > http://www.gfz-potsdam.de/karriere/stellenangebote/job/294215-g-geowissenschaftlerin/ > > -- > Prof. Dr. J?rg Erzinger > Helmholtz-Zentrum Potsdam > Deutsches GeoForschungsZentrum - GFZ > Telegrafenberg > D-14473 Potsdam > Tel: +49 (0)331-288-1420 > Fax:+49 (0)331-288-1474 > E-mail: erz at gfz-potsdam.de > www.gfz-potsdam.de > > _______________________________________________ > DMG_Diskussion mailing list > DMG_Diskussion at lists.spline.inf.fu-berlin.de > https://lists.spline.inf.fu-berlin.de/mailman/listinfo/dmg_diskussion Daniel Harlov Section 3.3 Chemistry and Physics of Earth Materials Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum - GFZ Stiftung des ?ff. Rechts Land Brandenburg Telegrafenberg D-14473 Potsdam FR Germany international tel +49 (331) 288-1456 international fax +49 (331) 288-1402 email: dharlov at gfz-potsdam.de -------------- next part -------------- An HTML attachment was scrubbed... URL: From kovacs.istvan.janos at mfgi.hu Thu Apr 23 11:12:43 2015 From: kovacs.istvan.janos at mfgi.hu (=?UTF-8?Q?Kov=C3=A1cs_Istv=C3=A1n_J=C3=A1nos?=) Date: Thu, 23 Apr 2015 17:12:43 +0200 Subject: [MSA-talk] Special Collection on 'Water in Nominally Hydrous and Anhydrous Minerals' in Amercian Mineralogist - coming soon! Message-ID: Dear Colleagues / Water in nominally hydrous and anhydrous minerals ?Community?! It is our great pleasure to announce that the prestigious American Mineralogist is starting soon a ?Special Collection? in the topic of ?Water in nominally hydrous and anhydrous minerals?. Publishing papers as parts of any ?Special Collection? offers many advantages which could substantially improve the visibility of your research without compromising the speed of publication (see details below). We hope that many of you may consider this new ?Special Collection? of American Mineralogist as a suitable place to communicate your latest results. This ?Special Collection?s? Associate Editors are: Nathalie Bolfan-Casanova (Clermont-Ferrand, France) Roland Stalder (Innsbruck, Austria) Istv?n Kov?cs (Budapest, Hungary) ?*As you likely know, the articles in our special collections are published as they are ready; nothing is held up for stragglers, no one is hurried who needs more time for something more complex. *Authors should submit their paper using the "Water in nominally hydrous and anhydrous minerals" pull down. See the picture below of a different collection to get the idea. *As papers grow, once a year a special collection booklet will be created and available in "MinPubs" for anyone who wants the whole collection in one place (available PDF or print). *The editor's goal is that peer review to first decision [reject, revise (most common), accept (extremely rare) ] be done in no more than 60 days. *Each paper in a special collection has a "kicker head" -- attached an example of what that looks like.? We looking forward to receiving contributions to this ?Special Collection? on ?Water on nominally hydrous and anhydrous minerals? once it is formally launched. Cheers and have a nice day, Istv?n -- Istvan Kovacs, PhD Research Fellow Geochemical and Laboratory Department Geological and Geophysical Institute of Hungary Stef?nia street 14., Budapest, 1143, Hungary Tel: work: +36-1-920-2381 mobile: +36 20 550 69 35 email: kovacs.istvan.janos at mfgi.hu, steve.rooman at gmail.com Skype ID: steverooman Researcher ID: http://www.researcherid.com/rid/A-1267-2008 Google Scholar ID: http://scholar.google.com/citations?hl=en&user=8tS-Ku0AAAAJ __________ Information from ESET Mail Security, version of virus signature database 11522 (20150423) __________ The message was checked by ESET Mail Security. http://www.eset.com -------------- next part -------------- A non-text attachment was scrubbed... Name: Example of special coll kicker.pdf Type: application/pdf Size: 208108 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: water pull down picture.png Type: image/png Size: 158654 bytes Desc: not available URL: From Frances.Cooper at bristol.ac.uk Thu Apr 23 16:31:14 2015 From: Frances.Cooper at bristol.ac.uk (Frances Cooper) Date: Thu, 23 Apr 2015 21:31:14 +0100 Subject: [MSA-talk] Two PhD projects at the University of Bristol Message-ID: Dear all, The Bristol Porphyry Copper Deposit Group has two fully-funded PhD studentships available for an October 2015 start. Both projects are fully supported by the mining company BHP Billiton and will form part of our larger research effort to investigate the links between volcanism, tectonics, and mineralisation in the formation of porphyry copper deposits. (1) Exhumation of Andean granites: implications for porphyry copper formation and enrichment Supervisors: Dr Frances Cooper, Prof Jon Blundy, Dr Dan Condon (2) From hypogene to supergene: High-precision geochronology of the Spence porphyry copper system, Chile Supervisors: Prof Jon Blundy, Dr Frances Cooper, Dr Dan Condon Funding is for 3.5 years and is open to applicants of any nationality with at least a 2.1 degree or equivalent. Preference will be given to applicants with an MSci or MSc but we are prepared to consider those with a BSc if they can demonstrate other relevant experience (e.g. industry experience). The deadline for applications is Friday 8th May 2015. For more information on the group, the projects, and how to apply, please visit: http://bristolpcd.org/opportunities Thanks, Frances ---------------------------------------- Dr Frances J. Cooper School of Earth Sciences University of Bristol United Kingdom Tel: +44 (0)117 954 5428 Web: bristol.ac.uk/fjcooper ---------------------------------------- -------------- next part -------------- An HTML attachment was scrubbed... URL: From glhenr at lsu.edu Thu Apr 23 16:55:03 2015 From: glhenr at lsu.edu (Darrell J Henry) Date: Thu, 23 Apr 2015 20:55:03 +0000 Subject: [MSA-talk] Electron microprobe lab manager position Message-ID: Dear Colleagues, We would like to remind MSA-talk of our lab manager position at LSU. The Department of Geology & Geophysics at Louisiana State University seeks an energetic, motivated EPMA Laboratory Manager to oversee a new JEOL 8230 EPMA, described below. The complete application can be found at: https://lsusystemcareers.lsu.edu/applicants/Central?quickFind=58977 Please forward this to any interested and qualified personnel. Thank you in advance! --------------------------------------------------------------------- **EPMA Laboratory Specialist/Manager** The Department of Geology and Geophysics at Louisiana State University invites applicants for a highly qualified researcher/laboratory specialist to supervise and operate a newly purchased JEOL 8230 Electron Probe Micro-Analyzer (EPMA). The successful candidate will work in a highly collaborative environment that includes faculty, undergraduate and graduate students, PhD researchers, and industrial partners across disciplinary areas such as geosciences, coastal sciences, material sciences and engineering, energy sciences and agricultural sciences. The EPMA is a micro-analytical instrument that will service the region and enhance collaborative partnerships with historically black colleges and universities. The JEOL EPMA will be housed within the Chevron Geomaterials Characterization Lab (CGCL) in the Geology & Geophysics Department, a campus-wide facility that is part of the Shared Instrumentation Facility (SIF) administrative infrastructure at LSU. The candidate will report to the SIF Director. Responsibilities include but are not limited to: Training undergraduate and graduate students on the use of the instrument for class work and research related to their degree programs; engaging with faculty and their research groups in solving micro-analytical challenges aiding in interpretation of results when appropriate; developing modified experimental procedures using EPMA; performing daily maintenance and validations to ensure top performance of the EPMA; developing and maintaining analytical standards; Working on the installation and testing of the new instrument; managing and executing internal and external industrial research programs using EPMA; participating in the development and integration of the CGCL with the SIF instrumentation; writing and co-author proposals to advance the state-of-the-art in EPMA research. Required Qualifications: Masters of Science (MS) degree in Chemistry, Materials Science, Geosciences or related areas; three years of EPMA experience. Desired Qualifications: Ph.D. in Chemistry, Materials Science, Geosciences or related area; three years of EPMA experience. Successful applicants must be reliable, quick-learning, highly organized, self-motivated, detail orientated, and possess excellent oral and written communication skills and interpersonal and management skills. The ability to work independently and in a team environment is important. Applicants must demonstrate a commitment to delivering excellence in a timely manner. For full consideration, we request a letter of interest, statement of relevant equipment experience, research interests, CV and contact information for three people willing to provide references. Screening of applications will begin 15 May 2015. Address any questions to: Dr. Darrell Henry, glhenr at lsu.edu Please fill out the online application at: https://lsusystemcareers.lsu.edu/applicants/Central?quickFind=58977 LSU IS COMMITTED TO DIVERSITY AND IS AN EQUAL OPPORTUNITY/EQUAL ACCESS EMPLOYER. ------------------------------------------------------------------- Darrell Henry Campanile Charities Professor of Geology 217 Howe-Russell-Kniffen Complex Louisiana State University Baton Rouge, LA 70803 Phone: 225-578-2693 Website: www.geol.lsu.edu/henry -------------- next part -------------- An HTML attachment was scrubbed... URL: From naprice at pdx.edu Thu Apr 23 15:44:06 2015 From: naprice at pdx.edu (Nancy Price) Date: Thu, 23 Apr 2015 12:44:06 -0700 Subject: [MSA-talk] Request for datasets to test a "spreadsheet relationship" tool Message-ID: Apologies for multiple postings.... I am posting this on behalf of a student at Portland State University (see below). If you would like more information or would like to share datasets, please respond to him directly at: alawini at pdx.edu . Thanks! Nancy _____________________________________ Dear scientists, I'm a Computer Science Ph.D. candidate looking for help with gathering data for my research. I am working on the problem of sorting through datasets that accumulate in a research project, currently where that data is in the form of spreadsheets (or CSV files). I have developed a prototype tool that helps determine relationships between spreadsheets (e.g., one is a subset of the other, they have common columns, one fills in values from the other). The idea is to help the user determine which spreadsheet or spreadsheets is best to use for a given task. I am looking for multiple spreadsheets related to a project. Our work will not report on the content of the data itself but rather on the performance of our tool in predicting accurate relationships among collected datasets. Please send your files to this email alawini at pdx.edu Your help will be highly appreciated. Thank you, Abdussalam Alawini ------------------------------- Nancy Ann Price, Ph.D. Portland State University- Assistant Prof. of Geology Cramer Hall- Room 17N USPS Mail: PO Box 751; Portland, OR 97207-0751 Email: naprice at pdx.edu, Ph/Texts: 1-240-542-8508; Office: 503-725-3398; Fax: 503-725-3025 -------------- next part -------------- An HTML attachment was scrubbed... URL: From dhummer at epss.ucla.edu Thu Apr 23 21:11:51 2015 From: dhummer at epss.ucla.edu (Daniel Hummer) Date: Thu, 23 Apr 2015 18:11:51 -0700 Subject: [MSA-talk] Deep Carbon Observatory - Early Career Scientist Workshop Message-ID: <55399857.4020000@epss.ucla.edu> Dear Colleagues, This is just a reminder that the application deadline for the Deep Carbon Observatory (DCO) Early Career Scientist Workshop, to be held the first week in September at the University of the Azores, is coming up on Friday, May 1, 2015. The full ad and weblink for the workshop can be found below. If you have questions please feel free to contact myself, or the PI of our organizing committee, Donato Giovannelli. Thanks, Dan Hummer -------- The Deep Carbon Observatory is hosting its second Early Career Scientist Workshop at the Centro De Vulcanologia e Avalia????o de Riscos Geol??gicos (http://www.cvarg.azores.gov.pt/), University of the Azores, S??o Miguel (Portugal), 31 August-5 September 2015. This workshop will bring together the next generation of researchers active in deep carbon studies from around the world. This relatively small workshop (~40 scientists) of early career researchers will continue to foster collaboration and community within the growing DCO Science Network. This workshop is funded by the Deep Carbon Observatory, and aims to support financially as many participants as possible. There is no registration fee for this workshop (accommodation and meals will be provided), and successful applicants will be eligible for up to 100% reimbursement of travel costs. Applications are encouraged from senior graduate students, postdoctoral researchers, fellows, and newly appointed assistant professors working on all aspect of carbon science (visit the DCO website for major details, https://deepcarbon.net//). More informations on the workshop and the application procedure are available at this link (https://deepcarbon.net/feature/second-dco-early-career-scientist-workshop#.VOZv2DVMekA). Deadline for the application is May 1, 2015. Please pass this message along to those that may be interested. Donato Giovannelli, PI Second DCO Early Career Scientist Workshop -- Donato Giovannelli, PhD ------------------------------------ a: Institute of Marine and Coastal Science - IMCS Rutgers University 71 Dudley Rd, suite 208 08901 New Brunswick, NJ - USA -- Daniel R Hummer Postdoctoral Scholar, Mineralogy and Crystallography Department of Earth, Planetary and Space Sciences University of California Los Angeles dhummer at epss.ucla.edu Phone: (814) 321-8859 Fax: (310) 825-2779 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ MSA-talk mailing list MSA-talk at minlists.org http://lists.minlists.org/mailman/listinfo/msa-talk From geotutor121 at yahoo.com Fri Apr 24 20:36:59 2015 From: geotutor121 at yahoo.com (Francis McCubbin) Date: Sat, 25 Apr 2015 00:36:59 +0000 (UTC) Subject: [MSA-talk] Grants for Student Research in Mineralogy and Petrology - 2016 Message-ID: <1190189364.3984462.1429922219378.JavaMail.yahoo@mail.yahoo.com> Please pass on this announcement * * * * * * * * * * The Mineralogical Society of America announces the 2016Grants for Student Research in Mineralogy and Petrology. The Grants for Student Research in Mineralogy and Petrologyare funded by an endowment created by contributions from the MSA membership.The grant comprises two awards of up to $5,000 each for research in mineralogyand petrology. Students, including graduate and undergraduate students, areencouraged to apply. However, all proposals are considered together. The awardselection will be based on the qualifications of the applicant, the quality,innovativeness, and scientific significance of the research, and the likelihoodof success of the project. Applicants may not apply for both this and the MSAGrant for Research in Crystallography in the same year. The grant is forresearch-related expenses only. Proposal submissions for the grant are to be made online.Further information and application form are available at http://www.minsocam.org/MSA/Awards/Min_Pet_Award.html Completed applications must be returned to the MSA BusinessOffice by June 1, 2015. The next award will be made in January, 2016. Francis M. McCubbin Chair, Mineralogy/Petrology Research Grant Committee -------------- next part -------------- An HTML attachment was scrubbed... URL: From jaspeer at minsocam.org Sun Apr 26 14:18:48 2015 From: jaspeer at minsocam.org (J Alex Speer) Date: Sun, 26 Apr 2015 14:18:48 -0400 Subject: [MSA-talk] Grant for PhD students on Mineral Pattern Formation in Archean Rocks Message-ID: <8B393489-DD54-4BC6-9B51-EDC804E67941@minsocam.org> Fellowship Opportunity on Mineral Pattern Formation In Archean Rocks A 3-year PhD position is offered at the Instituto Andaluz de Ciencias de la Tierra (CSIC/Universidad de Granada) in Granada (Spain) to applicants interested in the following project: Subject: Mineral pattern formation in Archean rocks. PhD Thesis Supervised by Juan Manuel Garc?a-Ruiz The offer We are offering a 3-year PhD position funded by the ERC Senior Advanced Grant ?Pattern formation and mineral self-organization in highly alkaline natural environments?, within the laboratory of Professor Juan Manuel Garc?a-Ruiz (Laboratorio de Estudios Cristalogr?ficos) at the Andalusian Institute of Earth Sciences (IACT) located in Granada, Spain. The laboratory of Prof. Garc?a-Ruiz belongs to CSIC (Spanish National Research Council) and University of Granada and has an international and multidisciplinary atmosphere with its research focus in crystallization, pattern formation and self-assembly. The laboratory is fully equipped to perform the project, with petrographic, confocal, atomic force and electron microscopies, X-ray diffractometers, several crystallization techniques, and also has fast access to the Center for Scientific Instrumentation of the University of Granada. The laboratory maintains cooperative relationships all over the world. The project: It is widely thought that Archean rocks contain biological remnants of the earliest living organisms that inhabited this planet. Therefore a lot of work has been and is devoted to searching for these precious remnants and to deciphering unambiguously their biogenicity and the biological information they might contain. However, Archean rocks also have mineral microstructures and patterns that contain unique information on the physics and chemistry of the earliest geological landscapes of this planet. To decipher the formation of these mineral patterns and to decode the geochemical information they contain is the objective of this PhD thesis. The task is by no means simple but it is undoubtedly highly rewarding. Further information on the project is available at webpage http://garciaruiz.net/prometheus/ Qualifications: We are therefore looking for a PhD candidate who is highly motivated to perform basic research, likes fieldwork but mostly enjoys and has some background in laboratory experiments and computer simulation. A master?s degree in Geology, Geochemistry, Crystallography, Chemistry, Earth Sciences or equivalent is mandatory for this position. Excellent communication skills in English will be required. Fieldwork will mostly take place in Australia in collaboration with the Australian Center of Astrobiology (University of New South Wales), in Sydney. The candidate should have a willingness to travel to different laboratories in the world and interact in a strongly interdisciplinary team. When to apply: Review of applications will begin immediately and continue until the position is filled before June 30, 2015. How to apply: Applications, including a two-page motivation letter and a CV with contact information of two potential referees, should be sent to Professor Juan Manuel Garc?a-Ruiz (juanmanuel.garcia.ruiz at csic.es). -------------- next part -------------- An HTML attachment was scrubbed... URL: From jaspeer at minsocam.org Sun Apr 26 14:18:50 2015 From: jaspeer at minsocam.org (J Alex Speer) Date: Sun, 26 Apr 2015 14:18:50 -0400 Subject: [MSA-talk] Grant for PhD students on Mineral/organic Self-assembly in Archean Times Message-ID: Fellowship Opportunity on Mineral-organic interactions and self-assembly in Alkaline silica-rich Environments A 3-year PhD position is offered at the Instituto Andaluz de Ciencias de la Tierra (CSIC/Universidad de Granada) in Granada (Spain) to applicants interested in the following project: Mineral-organic interactions and self-assembly in alkaline silica-rich environments PhD Thesis Supervised by Juan Manuel Garc?a-Ruiz The offer We are offering a 3-year PhD position funded by the ERC Senior Advanced Grant ?Pattern formation and mineral self-organization in highly alkaline natural environments?, within the laboratory of Professor Juan Manuel Garc?a-Ruiz (Laboratorio de Estudios Cristalogr?ficos) at the Andalusian Institute of Earth Sciences (IACT) located in Granada, Spain. The laboratory of Prof. Garc?a-Ruiz belongs to CSIC (Spanish National Research Council) and University of Granada and has an international and multidisciplinary atmosphere with its research focus in crystallization, pattern formation and self-assembly. The laboratory is fully equipped to perform the project, with petrographic, confocal, atomic force and electron microscopies, X-ray diffractometers, and several crystallization techniques, and also has fast access to the Center for Scientific Instrumentation of the University of Granada. The laboratory maintains cooperative relationships all over the world. The project: The geochemical scenario during the earliest stage of this planet, when life had not yet appeared, was driven by very different mineral reactions than those appearing and controlling its chemistry later, on a life-driving planet. It has been demonstrated that under the alkaline conditions that very likely appeared during these earliest days of the planet, minerals like carbonate and hydro-oxides interacted with silica to form fascinating complex hierarchically organized structures that may have played a key role in the transition from inorganic to organic (prebiotic) geochemistry. The objective of this PhD thesis is to sample alkaline waters all over the world, to perform laboratory experiments with these natural waters to produce nanostructured complex self-assembled minerals and then to form hybrid materials with organic compounds known to be easy available on a lifeless planet. Further information on the project is available at webpage http://garciaruiz.net/prometheus/ Qualifications: We are therefore looking for a PhD candidate who is highly motivated to perform basic research, likes fieldwork but also enjoys laboratory experiments and has some background in geochemistry, mineral growth and/or organic chemistry. A master?s degree in Earth Sciences or Materials Sciences or equivalent is mandatory for this position. Excellent communication skills in English will be required. Fieldwork for sampling alkaline waters will be performed in remote places of the world, so the candidate should have a willingness to travel under safe but demanding conditions. When to apply: Review of applications will begin immediately and continue until the position is filled before June 30, 2015. How to apply: Applications, including a two-page motivation letter and a CV with contact information of two potential referees, should be sent to Professor Juan Manuel Garc?a-Ruiz (juanmanuel.garcia.ruiz at csic.es) -------------- next part -------------- An HTML attachment was scrubbed... URL: From paul.sylvester at ttu.edu Mon Apr 27 10:43:22 2015 From: paul.sylvester at ttu.edu (Sylvester, Paul) Date: Mon, 27 Apr 2015 14:43:22 +0000 Subject: [MSA-talk] North American Laser Ablation Workshop - Update In-Reply-To: <1B4244D91354234CBD7B2BB653CD9BDC5FEEE016@centaur07.ttu.edu> References: <1B4244D91354234CBD7B2BB653CD9BDC5FEEE016@centaur07.ttu.edu> Message-ID: <1B4244D91354234CBD7B2BB653CD9BDC5FEEE0AD@centaur07.ttu.edu> Hi folks, The initial response for the inaugural North American Laser Ablation Workshop (NALAW), to be held May 27-28 at the University of Texas at Austin (Jackson School of Geosciences) has been fantastic. The workshop is vendor neutral, with the intent to cover fundamentals and parameters, instrumentation, data handling, and a range of scientific applications, as well as promote a sense of community among laser ablation users. Although vendors may not directly participate in the scientific program, poster submissions will continue to be accepted. Plenary talks for workshop sessions will feature: ?? John Cottle (UCSB) State of the art in isotope ratio analysis ?? Philip Doble (U. of Technology, Sydney) State of the art in bio-imaging ?? Jhanis Gonzalez (LBNL) Laser wavelength and pulse width: what should be used for which applications? ?? Adam Kent (Oregon State U.) Effective analysis of complex natural materials ?? Alan Koenig (USGS) Matrix matching: when is it necessary, when isn't it? ?? Bill McDonough (U. of Maryland) Where can improvements be made in LA-ICPMS analysis? ?? Chris McFarlane (U. New Brunswick) Ablation cells: what should be used for which applications? ?? Joe Petrus (Laurentian U.) Comparison of some software programs for data reduction for LA-ICPMS There is still time to register and participate in Workshop! Registration and the full program of talks, posters, and workshop activities, are available at: www.nalaworkshop.weebly.com See you in Austin! Paul Sylvester Department of Geosciences Texas Tech University Lubbock TX 79494-1053 Nathan Miller Department of Geological Sciences The University of Texas at Austin Austin TX 78712-0254 ________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: From s.jahn at uni-koeln.de Mon Apr 27 10:26:59 2015 From: s.jahn at uni-koeln.de (Sandro Jahn) Date: Mon, 27 Apr 2015 16:26:59 +0200 Subject: [MSA-talk] research scientist position at University of Cologne Message-ID: <20150427162659.669262bjlpdiwnxv@webmail.uni-koeln.de> Dear colleagues, I would like to draw your attention to a job opening for a research scientist in the field of high pressure experimental mineralogy at the University of Cologne (see attached file). Best regards, Sandro Jahn -- Sandro Jahn Professor for Mineralogy and Crystallography University of Cologne Institute of Geology and Mineralogy Greinstra?e 4-6 D-50939 Cologne Germany Phone: +49 221 470 4420 Fax: +49 221 470 4963 E-Mail: s.jahn at uni-koeln.de -------------- next part -------------- A non-text attachment was scrubbed... Name: Research Scientist Institute of Geology and Mineralogy.pdf Type: application/download Size: 25399 bytes Desc: not available URL: From Hauke.Marquardt at uni-bayreuth.de Mon Apr 27 11:15:17 2015 From: Hauke.Marquardt at uni-bayreuth.de (Hauke Marquardt) Date: Mon, 27 Apr 2015 17:15:17 +0200 Subject: [MSA-talk] GeoBerlin2015 session "Properties of Earth Materials and Constraints on Mantle Flow" - please submit your abstract! Message-ID: <553E5285.1080109@uni-bayreuth.de> /- ///we kindly apologize for multiple postings/ - /Dear all, the submission deadline has been extended and we would like to once more encourage submissions to our interdiciplinary session in the theme "mantle dynamics / driving forces" at this year's DGGV and DMG joint meeting "GeoBerlin2015: Dynamic Earth - from Alfred Wegener to today and beyond" (October, 04.-07., Berlin): * "Properties of Earth Materials and Constraints on Mantle Flow (A4-03)" * _Session Description:_ Heat flow in Earth?s mantle enables viscous flow of mantle material over long time scales and drives plate tectonic convection. Volcanism, and the continuous creation and subduction of oceanic lithosphere regulate the exchange rates of energy and material between the Earth?s interior and surface/atmosphere. Geophysical observations provide increasingly detailed constraints on flow patterns in the mantle. For instance, seismic anisotropy in tectonically active regions in the mantle, such as spreading zones or boundary regions, is most likely related to preferred alignment of crystallites caused by the prevalent tectonic stress. Furthermore, tomographic images of fast and slow seismic wave speeds in the mantle are often associated with descending slabs and ascending plumes. This interpretation, however, remains ambiguous as varying wavespeeds could be caused by factors such as anomalous temperatures, partial melting, deformation associated with high dislocation density, or the presence of water. A detailed interpretation of these large-scale geophysical observations in terms of mantle flow patterns therefore should be synergized with information about the physical and chemical properties, and behaviour of Earth?s materials under high temperature and pressure conditions in the laboratory or in computer simulations. In this session, we welcome contributions on the properties of mantle materials that relate to our understanding of material flow in the mantle. *Invited Speaker: Ulrich Faul, MIT* Submission is possible until *18.05.15***at*http://www.geoberlin2015.de/abstracts.html Further plenary lectures at the GeoBerlin meeting will be given by Dan McKenzie, Maureen Raymo, Barbara Romanowicz and Trond Torsvik! *Many thanks - we hope to see you in Berlin, Hauke Marquardt (BGI Bayreuth) Robert Farla (BGI Bayreuth) Patrick Cordier (Universit? Lille 1) ------------------------------------- Dr. Hauke Marquardt DFG Emmy Noether-Research Group www.depict-group.org/geomax Bayerisches Geoinstitut BGI University of Bayreuth 95440 Bayreuth, Germany Tel: +49 (0)921/55-3718 Fax: +49 (0)921/55-3769 Email:Hauke.Marquardt at uni-bayreuth.de -------------------------------------- -------------- next part -------------- An HTML attachment was scrubbed... URL: From esgrew at maine.edu Mon Apr 27 20:51:40 2015 From: esgrew at maine.edu (Edward Grew) Date: Mon, 27 Apr 2015 20:51:40 -0400 Subject: [MSA-talk] Nominate a Fellow Message-ID: Dear Members and Fellows of the MSA, Do you have a colleague who has contributed significantly to the advancement of mineralogy, crystallography, geochemistry, petrology, or allied sciences and whose scientific contribution utilized mineralogical studies or data? Such a colleague, if she or he is a member of MSA, is a potential candidate for Fellowship in the Society. Award of fellowship is based on contributions to advancing the fields of mineralogy, crystallography, and petrology. Such contributions include not only research, publications, teaching, mentoring and advising, but also professional service through editorships, reviews, committee work, and development of textbooks or other educational materials. I invite you to select an outstanding colleague and submit a nomination package. Instructions for submission are at http://www.minsocam.org/msa/Awards/Fellowship.html#Submitting. The deadline is June 1, 2015. Please feel free to contact me should you have any questions or need more information. Sincerely, Ed Dr. Edward S. Grew Chair of the 2015 Nominations Committee for MSA Fellows University of Maine School of Earth and Climate Sciences 5790 Bryant Global Science Center Orono ME 04469-5790 USA phone: +1 (207) 581-2169 fax: +1 (207) 581-2202 E-mail: esgrew at maine.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: From thahn1 at vols.utk.edu Wed Apr 29 06:42:19 2015 From: thahn1 at vols.utk.edu (Hahn Jr, Timothy Michael) Date: Wed, 29 Apr 2015 10:42:19 +0000 Subject: [MSA-talk] Symplectite Formation Message-ID: Dear all, I am a masters student currently working on a research project and I have come across an unusual symplectite. Myself and others have tried multiple explanations for the formation of these symplectites but everything usually ends up as a dead end. I have inserted a link containing two images of the symplectites (images were too large to include in the message). I was wondering if anyone might have some explanation for a formation mechanism? I should also add that these are extraterrestrial sample. Any comments would be greatly appreciated! If anyone is interested I have additional material regarding these symplectites. These symplectites are found in Mg-rich olivine and pyroxene (Mg # > 85) clasts that are contained within breccias. The symplectites have sharp boundaries against the adjacent phases and appear to have some type of crystallographic control, which is indicated by the heterogenous nature of the chromite lamellae (this may indicate a polycrystalline precursor). Some of the symplectites contain minor FeNi metal, troilite, and Ca-pyroxene, as well as ?islands? of orthopyroxene (if the symplectites represent a breakdown textures these could possibly be relict inclusions). I have reconstructed the bulk composition of the symplectites using broad beam analyses, as well as point counting from individual analyses. I have included the bulk composition below from both the broad beam analyses and point count reconstruction. There is a big difference between the two methods and this is probably due to the density consideration when using the point counting method or the errors associated with broad beam analyses. The stoichometry does not match any known mineral when using either the broad beam or the point count reconstruction as the starting composition. https://docs.google.com/document/d/1wD7sKfAoQrdrXuKjvyTctfslHnDw4zWm8mgijY3GOxA/edit?usp=sharing Thanks, Timothy M. Hahn Jr. M.S. Geology Candidate University of Tennessee, Knoxville 2236 Fisher Place Knoxville, TN 37920 (314) 288-7360 Point Count Reconstruction SiO2 21.98 TiO2 0.09 Al2O3 2.19 V2O3 0.41 Cr2O3 40.41 MgO 16.87 CaO 0.31 MnO 0.47 FeO 17.02 Total 99.76 Broad Beam SiO2 39.6 TiO2 0.04 Al2O3 1.2 V2O3 0.2 Cr2O3 20.9 MgO 25.1 CaO 1.5 MnO 0.4 FeO 12.5 Na2O n.d Total 101.5 -------------- next part -------------- An HTML attachment was scrubbed... URL: From kselkregg at aol.com Wed Apr 29 08:26:57 2015 From: kselkregg at aol.com (kselkregg at aol.com) Date: Wed, 29 Apr 2015 08:26:57 -0400 Subject: [MSA-talk] symplplectites Message-ID: <14d0524f497-1367-6e1@webprd-a96.mail.aol.com> Timothy, Those symplectites look very much like co-precipitates. I work in the fusion cast refractory industry and one of our product lines has a similar structure where the corundum and zirconia precipitated together out of the melt into a single structure with zirconia lammallae and corundum matrix. Kevin Selkregg -------------- next part -------------- An HTML attachment was scrubbed... URL: From bob_d at levee.wustl.edu Wed Apr 29 11:38:33 2015 From: bob_d at levee.wustl.edu (Bob Dymek) Date: Wed, 29 Apr 2015 10:38:33 -0500 Subject: [MSA-talk] Symplectite Formation In-Reply-To: References: Message-ID: <20150429153838.6DA0C4090C67@minlists.org> An HTML attachment was scrubbed... URL: From rtracy at vt.edu Wed Apr 29 12:30:42 2015 From: rtracy at vt.edu (Robert Tracy) Date: Wed, 29 Apr 2015 12:30:42 -0400 Subject: [MSA-talk] Symplectite Formation In-Reply-To: <20150429153838.6DA0C4090C67@minlists.org> References: <20150429153838.6DA0C4090C67@minlists.org> Message-ID: <15CF7C72-5044-48B2-81AB-F8777D5DFF31@vt.edu> Tim, I worked extensively on 76535 at that time with Steve Haggerty, although no publication resulted, and I agree entirely with Bob that the most reasonable interpretation of the features of the symplectic intergrowths suggest simultaneous crystallization of late-stage magmatic phases in a eutectoid form oin the interstices between larger olivine and plag grains. What he didn't mention, and I suspect he would agree with me on this, is that the proposed olivine-anorthite solid-state reaction was probably to a large extent intended to be a "wishful thinking" bit of evidence for lunar subsolidus metamorphism. Bob T. Dr. Robert Tracy Professor of Geosciences Associate Department Head Director, Museum of Geosciences Virginia Tech Blacksburg VA 24061-0420 540-231-5980 540-231-3386 (F) On Apr 29, 2015, at 11:38 AM, Bob Dymek wrote: > Dear Tim, > > The "symplectites" in your extraterrestial sample invite a comparison to those found in lunar troctolte sample 76535. The origin of these intergrowths was the subject of a heated debate back in the 1970s (and disagreement continued for a long time afterwards, perhaps to this very day). The symplectites were interpreted originally by Gooley et al. as the products of a solid-state reaction between olivine+plagioclase. We offered the alternative that the symplectites resulted from melt crystallization producing a eutectoid-like intergrowth. Perhaps the information contained in those papers would be of use to you in your studies. Good luck. > > Cheers, > > Bob Dymek > > > > At 05:42 AM 4/29/2015, Hahn Jr, Timothy Michael wrote: >> Content-Language: en-US >> Content-Type: multipart/alternative; >> boundary="_000_B2295C2794A54F66BF07DC0B6525453Dvolsutkedu_" >> >> Dear all, >> >> I am a masters student currently working on a research project and I have come across an unusual symplectite. Myself and others have tried multiple explanations for the formation of these symplectites but everything usually ends up as a dead end. I have inserted a link containing two images of the symplectites (images were too large to include in the message). I was wondering if anyone might have some explanation for a formation mechanism? I should also add that these are extraterrestrial sample. Any comments would be greatly appreciated! If anyone is interested I have additional material regarding these symplectites. >> >> These symplectites are found in Mg-rich olivine and pyroxene (Mg # > 85) clasts that are contained within breccias. The symplectites have sharp boundaries against the adjacent phases and appear to have some type of crystallographic control, which is indicated by the heterogenous nature of the chromite lamellae (this may indicate a polycrystalline precursor). Some of the symplectites contain minor FeNi metal, troilite, and Ca-pyroxene, as well as ???islands??? of orthopyroxene (if the symplectites represent a breakdown textures these could possibly be relict inclusions). I have reconstructed the bulk composition of the symplectites using broad beam analyses, as well as point counting from individual analyses. I have included the bulk composition below from both the broad beam analyses and point count reconstruction. There is a big difference between the two methods and this is probably due to the density consideration when using the point counting method or the errors associated with broad beam analyses. The stoichometry does not match any known mineral when using either the broad beam or the point count reconstruction as the starting composition. >> >> >> https://docs.google.com/document/d/1wD7sKfAoQrdrXuKjvyTctfslHnDw4zWm8mgijY3GOxA/edit?usp=sharing >> >> >> Thanks, >> >> Timothy M. Hahn Jr. >> >> M.S. Geology Candidate >> University of Tennessee, Knoxville >> 2236 Fisher Place >> Knoxville, TN 37920 >> (314) 288-7360 >> >> >> >> >> Point Count Reconstruction >> >> SiO2 21.98 >> TiO2 0.09 >> Al2O3 2.19 >> V2O3 0.41 >> Cr2O3 40.41 >> MgO 16.87 >> CaO 0.31 >> MnO 0.47 >> FeO 17.02 >> Total 99.76 >> >> >> >> Broad Beam >> >> SiO2 39.6 >> TiO2 0.04 >> Al2O3 1.2 >> V2O3 0.2 >> Cr2O3 20.9 >> MgO 25.1 >> CaO 1.5 >> MnO 0.4 >> FeO 12.5 >> Na2O n.d >> Total 101.5 >> >> >> >> _______________________________________________ >> MSA-talk mailing list >> MSA-talk at minlists.org >> http://lists.minlists.org/mailman/listinfo/msa-talk > > Robert F. Dymek, Ph.D. > Professor of Geology > Department of Earth & Planetary Sciences > Rudolph Hall > Washington University > St. Louis, MO 63130 > 314-935-5344 (office) > 314-935-7361 (facsimile) > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk -------------- next part -------------- An HTML attachment was scrubbed... URL: From bob_d at levee.wustl.edu Wed Apr 29 12:35:16 2015 From: bob_d at levee.wustl.edu (Bob Dymek) Date: Wed, 29 Apr 2015 11:35:16 -0500 Subject: [MSA-talk] Symplectite Formation In-Reply-To: <15CF7C72-5044-48B2-81AB-F8777D5DFF31@vt.edu> References: <20150429153838.6DA0C4090C67@minlists.org> <15CF7C72-5044-48B2-81AB-F8777D5DFF31@vt.edu> Message-ID: <20150429163520.B0BF64090D8C@minlists.org> An HTML attachment was scrubbed... URL: From haggerty at fiu.edu Wed Apr 29 12:56:56 2015 From: haggerty at fiu.edu (Stephen Haggerty) Date: Wed, 29 Apr 2015 16:56:56 +0000 Subject: [MSA-talk] Symplectite Formation In-Reply-To: <15CF7C72-5044-48B2-81AB-F8777D5DFF31@vt.edu> References: <20150429153838.6DA0C4090C67@minlists.org>, <15CF7C72-5044-48B2-81AB-F8777D5DFF31@vt.edu> Message-ID: <1430326616644.13359@fiu.edu> ?Hi Tim: Enjoyed Bob's comment and am reminded: 1. an 'unpublishable' note from Robin Brett on the matter; and 2. of the heady lunar days & the wonderful UMass encounters with Bob Tracy & colleagues. We have looked at a large number of symplectites in mantle xenoliths [Field & Haggerty (1994) CM&P 118, 138-156; and Field (2008) Am Min 93, 618-631], in which many but not all are associated with garnet. Although we invoke a range of reactions [a liberty in the mantle!] the classic goes back to Ian McGregor (1974): Ol + Gt = Opx + Sp. One of your BS images looks very much like an advancing Ol-front. However, rather doubt that Larry or Hap would entertain Gt in your ET sample? Best regards, Steve Haggerty ________________________________ From: msa-talk-bounces at minlists.org on behalf of Robert Tracy Sent: Wednesday, April 29, 2015 12:30 PM To: Bob Dymek Cc: msa-talk at minlists.org Subject: Re: [MSA-talk] Symplectite Formation Tim, I worked extensively on 76535 at that time with Steve Haggerty, although no publication resulted, and I agree entirely with Bob that the most reasonable interpretation of the features of the symplectic intergrowths suggest simultaneous crystallization of late-stage magmatic phases in a eutectoid form oin the interstices between larger olivine and plag grains. What he didn't mention, and I suspect he would agree with me on this, is that the proposed olivine-anorthite solid-state reaction was probably to a large extent intended to be a "wishful thinking" bit of evidence for lunar subsolidus metamorphism. Bob T. Dr. Robert Tracy Professor of Geosciences Associate Department Head Director, Museum of Geosciences Virginia Tech Blacksburg VA 24061-0420 540-231-5980 540-231-3386 (F) On Apr 29, 2015, at 11:38 AM, Bob Dymek > wrote: Dear Tim, The "symplectites" in your extraterrestial sample invite a comparison to those found in lunar troctolte sample 76535. The origin of these intergrowths was the subject of a heated debate back in the 1970s (and disagreement continued for a long time afterwards, perhaps to this very day). The symplectites were interpreted originally by Gooley et al. as the products of a solid-state reaction between olivine+plagioclase. We offered the alternative that the symplectites resulted from melt crystallization producing a eutectoid-like intergrowth. Perhaps the information contained in those papers would be of use to you in your studies. Good luck. Cheers, Bob Dymek At 05:42 AM 4/29/2015, Hahn Jr, Timothy Michael wrote: Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_B2295C2794A54F66BF07DC0B6525453Dvolsutkedu_" Dear all, I am a masters student currently working on a research project and I have come across an unusual symplectite. Myself and others have tried multiple explanations for the formation of these symplectites but everything usually ends up as a dead end. I have inserted a link containing two images of the symplectites (images were too large to include in the message). I was wondering if anyone might have some explanation for a formation mechanism? I should also add that these are extraterrestrial sample. Any comments would be greatly appreciated! If anyone is interested I have additional material regarding these symplectites. These symplectites are found in Mg-rich olivine and pyroxene (Mg # > 85) clasts that are contained within breccias. The symplectites have sharp boundaries against the adjacent phases and appear to have some type of crystallographic control, which is indicated by the heterogenous nature of the chromite lamellae (this may indicate a polycrystalline precursor). Some of the symplectites contain minor FeNi metal, troilite, and Ca-pyroxene, as well as ???islands??? of orthopyroxene (if the symplectites represent a breakdown textures these could possibly be relict inclusions). I have reconstructed the bulk composition of the symplectites using broad beam analyses, as well as point counting from individual analyses. I have included the bulk composition below from both the broad beam analyses and point count reconstruction. There is a big difference between the two methods and this is probably due to the density consideration when using the point counting method or the errors associated with broad beam analyses. The stoichometry does not match any known mineral when using either the broad beam or the point count reconstruction as the starting composition. https://docs.google.com/document/d/1wD7sKfAoQrdrXuKjvyTctfslHnDw4zWm8mgijY3GOxA/edit?usp=sharing Thanks, Timothy M. Hahn Jr. M.S. Geology Candidate University of Tennessee, Knoxville 2236 Fisher Place Knoxville, TN 37920 (314) 288-7360 Point Count Reconstruction SiO2 21.98 TiO2 0.09 Al2O3 2.19 V2O3 0.41 Cr2O3 40.41 MgO 16.87 CaO 0.31 MnO 0.47 FeO 17.02 Total 99.76 Broad Beam SiO2 39.6 TiO2 0.04 Al2O3 1.2 V2O3 0.2 Cr2O3 20.9 MgO 25.1 CaO 1.5 MnO 0.4 FeO 12.5 Na2O n.d Total 101.5 _______________________________________________ MSA-talk mailing list MSA-talk at minlists.org http://lists.minlists.org/mailman/listinfo/msa-talk Robert F. Dymek, Ph.D. Professor of Geology Department of Earth & Planetary Sciences Rudolph Hall Washington University St. Louis, MO 63130 314-935-5344 (office) 314-935-7361 (facsimile) _______________________________________________ MSA-talk mailing list MSA-talk at minlists.org http://lists.minlists.org/mailman/listinfo/msa-talk -------------- next part -------------- An HTML attachment was scrubbed... URL: From thahn1 at vols.utk.edu Wed Apr 29 13:10:56 2015 From: thahn1 at vols.utk.edu (Hahn Jr, Timothy Michael) Date: Wed, 29 Apr 2015 17:10:56 +0000 Subject: [MSA-talk] Symplectite Formation In-Reply-To: <1430326616644.13359@fiu.edu> References: <20150429153838.6DA0C4090C67@minlists.org> <,> <15CF7C72-5044-48B2-81AB-F8777D5DFF31@vt.edu> <1430326616644.13359@fiu.edu> Message-ID: All, I am grateful for all of the responses! I?ve looked into the solid-state reaction between plagioclase and olivine, however the clasts contain no plagioclase. Additionally, I don?t think we would expect it to be a late-stage melt based of the reconstructed bulk composition (too much chrome). We have entertained the idea of a breakdown texture of a Cr-Garnet (Knorringite) but the stoichiometry does not match, unless a considerable amount of FeO is Fe2O3 (which we do not expect). In addition to the stoichiometry, the pressures needed for garnet formation are lacking considerably! These are a few of the many problems we have encountered. Tim On Apr 29, 2015, at 12:56 PM, Stephen Haggerty > wrote: ?Hi Tim: Enjoyed Bob's comment and am reminded: 1. an 'unpublishable' note from Robin Brett on the matter; and 2. of the heady lunar days & the wonderful UMass encounters with Bob Tracy & colleagues. We have looked at a large number of symplectites in mantle xenoliths [Field & Haggerty (1994) CM&P 118, 138-156; and Field (2008) Am Min 93, 618-631], in which many but not all are associated with garnet. Although we invoke a range of reactions [a liberty in the mantle!] the classic goes back to Ian McGregor (1974): Ol + Gt = Opx + Sp. One of your BS images looks very much like an advancing Ol-front. However, rather doubt that Larry or Hap would entertain Gt in your ET sample? Best regards, Steve Haggerty ________________________________ From: msa-talk-bounces at minlists.org > on behalf of Robert Tracy > Sent: Wednesday, April 29, 2015 12:30 PM To: Bob Dymek Cc: msa-talk at minlists.org Subject: Re: [MSA-talk] Symplectite Formation Tim, I worked extensively on 76535 at that time with Steve Haggerty, although no publication resulted, and I agree entirely with Bob that the most reasonable interpretation of the features of the symplectic intergrowths suggest simultaneous crystallization of late-stage magmatic phases in a eutectoid form oin the interstices between larger olivine and plag grains. What he didn't mention, and I suspect he would agree with me on this, is that the proposed olivine-anorthite solid-state reaction was probably to a large extent intended to be a "wishful thinking" bit of evidence for lunar subsolidus metamorphism. Bob T. Dr. Robert Tracy Professor of Geosciences Associate Department Head Director, Museum of Geosciences Virginia Tech Blacksburg VA 24061-0420 540-231-5980 540-231-3386 (F) On Apr 29, 2015, at 11:38 AM, Bob Dymek > wrote: Dear Tim, The "symplectites" in your extraterrestial sample invite a comparison to those found in lunar troctolte sample 76535. The origin of these intergrowths was the subject of a heated debate back in the 1970s (and disagreement continued for a long time afterwards, perhaps to this very day). The symplectites were interpreted originally by Gooley et al. as the products of a solid-state reaction between olivine+plagioclase. We offered the alternative that the symplectites resulted from melt crystallization producing a eutectoid-like intergrowth. Perhaps the information contained in those papers would be of use to you in your studies. Good luck. Cheers, Bob Dymek At 05:42 AM 4/29/2015, Hahn Jr, Timothy Michael wrote: Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_B2295C2794A54F66BF07DC0B6525453Dvolsutkedu_" Dear all, I am a masters student currently working on a research project and I have come across an unusual symplectite. Myself and others have tried multiple explanations for the formation of these symplectites but everything usually ends up as a dead end. I have inserted a link containing two images of the symplectites (images were too large to include in the message). I was wondering if anyone might have some explanation for a formation mechanism? I should also add that these are extraterrestrial sample. Anycomments would be greatly appreciated! If anyone is interested I have additional material regarding these symplectites. These symplectites are found in Mg-rich olivine and pyroxene (Mg # > 85) clasts that are contained within breccias. The symplectites have sharp boundaries against the adjacent phases and appear to have some type of crystallographic control, which is indicated by the heterogenous nature of the chromite lamellae (this may indicate a polycrystalline precursor). Some of the symplectites contain minor FeNi metal, troilite, and Ca-pyroxene, as well as ???islands??? of orthopyroxene (if the symplectites represent a breakdown textures these could possibly be relict inclusions). I have reconstructed the bulk composition of the symplectites using broad beam analyses, as well as point counting from individual analyses. I have included the bulk composition below from both the broad beam analyses and point count reconstruction. There is a big difference between the two methods and this is probably due to the density consideration when using the point counting method or the errors associated with broad beam analyses. The stoichometry does not match any known mineral when using either the broad beam or the point count reconstruction as the starting composition. https://docs.google.com/document/d/1wD7sKfAoQrdrXuKjvyTctfslHnDw4zWm8mgijY3GOxA/edit?usp=sharing Thanks, Timothy M. Hahn Jr. M.S. Geology Candidate University of Tennessee, Knoxville 2236 Fisher Place Knoxville, TN 37920 (314) 288-7360 Point Count Reconstruction SiO2 21.98 TiO2 0.09 Al2O3 2.19 V2O3 0.41 Cr2O3 40.41 MgO 16.87 CaO 0.31 MnO 0.47 FeO 17.02 Total 99.76 Broad Beam SiO2 39.6 TiO2 0.04 Al2O3 1.2 V2O3 0.2 Cr2O3 20.9 MgO 25.1 CaO 1.5 MnO 0.4 FeO 12.5 Na2O n.d Total 101.5 _______________________________________________ MSA-talk mailing list MSA-talk at minlists.org http://lists.minlists.org/mailman/listinfo/msa-talk Robert F. Dymek, Ph.D. Professor of Geology Department of Earth & Planetary Sciences Rudolph Hall Washington University St. Louis, MO 63130 314-935-5344 (office) 314-935-7361 (facsimile) _______________________________________________ MSA-talk mailing list MSA-talk at minlists.org http://lists.minlists.org/mailman/listinfo/msa-talk _______________________________________________ MSA-talk mailing list MSA-talk at minlists.org http://lists.minlists.org/mailman/listinfo/msa-talk -------------- next part -------------- An HTML attachment was scrubbed... URL: From selardo at carnegiescience.edu Wed Apr 29 13:26:28 2015 From: selardo at carnegiescience.edu (Elardo, Stephen) Date: Wed, 29 Apr 2015 13:26:28 -0400 Subject: [MSA-talk] Symplectite Formation In-Reply-To: References: <20150429153838.6DA0C4090C67@minlists.org> <15CF7C72-5044-48B2-81AB-F8777D5DFF31@vt.edu> <1430326616644.13359@fiu.edu> Message-ID: Hi Tim, A few years ago we took another look at the same 76535 symplectites that the Bobs and Steve looked at. We leaned away from the late-stage trapped melt model because in at least once instance that I can remember, we found a relict olivine-plag grain boundary preserved by the chromite morphology within the symplectite which wouldn't have been there had the phases grown from trapped melt. That led us to favor the sub-solidus model, but based on some other constraints from the sample, we found the amount of Cr needed to from the symplectites to be an issue. We suggested a model where chromite was added along select grain boundaries by a infiltrating melt. Its a tough problem, though, hence the "heated debate" back in the '70s that's enjoyable to read about now in the literature! Here's a link to our paper, if you're interested. http://www.sciencedirect.com/science/article/pii/S001670371200172X Cheers, Steve Elardo *---Dr. Stephen M. Elardo* Post-Doctoral Research Associate Geophysical Laboratory Carnegie Institution of Washington 5251 Broad Branch Road, NW Washington, DC 20015 Office Phone: 202-478-8479 On Wed, Apr 29, 2015 at 1:10 PM, Hahn Jr, Timothy Michael < thahn1 at vols.utk.edu> wrote: > All, > > I am grateful for all of the responses! I?ve looked into the solid-state > reaction between plagioclase and olivine, however the clasts contain no > plagioclase. Additionally, I don?t think we would expect it to be a > late-stage melt based of the reconstructed bulk composition (too much > chrome). We have entertained the idea of a breakdown texture of a > Cr-Garnet (Knorringite) but the stoichiometry does not match, unless a > considerable amount of FeO is Fe2O3 (which we do not expect). In addition > to the stoichiometry, the pressures needed for garnet formation are lacking > considerably! These are a few of the many problems we have encountered. > > Tim > > > On Apr 29, 2015, at 12:56 PM, Stephen Haggerty wrote: > > ?Hi Tim: > > Enjoyed Bob's comment and am reminded: 1. an 'unpublishable' note from > Robin Brett on the matter; and 2. of the heady lunar days & the wonderful > UMass encounters with Bob Tracy & colleagues. > We have looked at a large number of symplectites in mantle xenoliths > [Field & Haggerty (1994) CM&P 118, 138-156; and Field (2008) Am Min 93, > 618-631], in which many but not all are associated with garnet. Although we > invoke a range of reactions [a liberty in the mantle!] the classic goes > back to Ian McGregor (1974): > Ol + Gt = Opx + Sp. One of your BS images looks very much like an > advancing Ol-front. However, rather doubt that Larry or Hap would entertain > Gt in your ET sample? > > Best regards, Steve Haggerty > > ------------------------------ > > *From:* msa-talk-bounces at minlists.org on > behalf of Robert Tracy > *Sent:* Wednesday, April 29, 2015 12:30 PM > *To:* Bob Dymek > *Cc:* msa-talk at minlists.org > *Subject:* Re: [MSA-talk] Symplectite Formation > > Tim, > > I worked extensively on 76535 at that time with Steve Haggerty, although > no publication resulted, and I agree entirely with Bob that the most > reasonable interpretation of the features of the symplectic intergrowths > suggest simultaneous crystallization of late-stage magmatic phases in a > eutectoid form oin the interstices between larger olivine and plag grains. > What he didn't mention, and I suspect he would agree with me on this, is > that the proposed olivine-anorthite solid-state reaction was probably to a > large extent intended to be a "wishful thinking" bit of evidence for lunar > subsolidus metamorphism. > > Bob T. > > Dr. Robert Tracy > Professor of Geosciences > Associate Department Head > Director, Museum of Geosciences > Virginia Tech > Blacksburg VA 24061-0420 > 540-231-5980 > 540-231-3386 (F) > > > > > On Apr 29, 2015, at 11:38 AM, Bob Dymek wrote: > > > > > > > > > > > > *Dear Tim, The "symplectites" in your extraterrestial sample invite a > comparison to those found in lunar troctolte sample 76535. The origin of > these intergrowths was the subject of a heated debate back in the 1970s > (and disagreement continued for a long time afterwards, perhaps to this > very day). The symplectites were interpreted originally by Gooley et al. > as the products of a solid-state reaction between olivine+plagioclase. We > offered the alternative that the symplectites resulted from melt > crystallization producing a eutectoid-like intergrowth. Perhaps the > information contained in those papers would be of use to you in your > studies. Good luck. Cheers, Bob Dymek *At 05:42 AM 4/29/2015, Hahn Jr, > Timothy Michael wrote: > > Content-Language: en-US > Content-Type: multipart/alternative; > boundary="_000_B2295C2794A54F66BF07DC0B6525453Dvolsutkedu_" > > Dear all, > > I am a masters student currently working on a research project and I have > come across an unusual symplectite. Myself and others have tried multiple > explanations for the formation of these symplectites but everything usually > ends up as a dead end. I have inserted a link containing two images of the > symplectites (images were too large to include in the message). I was > wondering if anyone might have some explanation for a formation mechanism? > I should also add that these are extraterrestrial sample. *Any*comments > would be greatly appreciated! If anyone is interested I have additional > material regarding these symplectites. > > > These symplectites are found in Mg-rich olivine and pyroxene (Mg # > 85) > clasts that are contained within breccias. The symplectites have sharp > boundaries against the adjacent phases and appear to have some type of > crystallographic control, which is indicated by the heterogenous nature of > the chromite lamellae (this may indicate a polycrystalline precursor). > Some of the symplectites contain minor FeNi metal, troilite, and > Ca-pyroxene, as well as ???islands??? of orthopyroxene (if the symplectites > represent a breakdown textures these could possibly be relict inclusions). > I have reconstructed the bulk composition of the symplectites using broad > beam analyses, as well as point counting from individual analyses. I have > included the bulk composition below from both the broad beam analyses and > point count reconstruction. There is a big difference between the two > methods and this is probably due to the density consideration when using > the point counting method or the errors associated with broad beam > analyses. The stoichometry does not match any known mineral when using > either the broad beam or the point count reconstruction as the starting > composition. > > > > https://docs.google.com/document/d/1wD7sKfAoQrdrXuKjvyTctfslHnDw4zWm8mgijY3GOxA/edit?usp=sharing > > > > Thanks, > > > *Timothy M. Hahn Jr. * > M.S. Geology Candidate > University of Tennessee, Knoxville > 2236 Fisher Place > Knoxville, TN 37920 > (314) 288-7360 > > > > > > *Point Count Reconstruction * > SiO2 21.98 > TiO2 0.09 > Al2O3 2.19 > V2O3 0.41 > Cr2O3 40.41 > MgO 16.87 > CaO 0.31 > MnO 0.47 > FeO 17.02 > Total 99.76 > > > > > *Broad Beam * > SiO2 39.6 > TiO2 0.04 > Al2O3 1.2 > V2O3 0.2 > Cr2O3 20.9 > MgO 25.1 > CaO 1.5 > MnO 0.4 > FeO 12.5 > Na2O n.d > Total 101.5 > > > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > > > Robert F. Dymek, Ph.D. > Professor of Geology > Department of Earth & Planetary Sciences > Rudolph Hall > Washington University > St. Louis, MO 63130 > 314-935-5344 (office) > 314-935-7361 (facsimile) > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > > > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From patnjeff at keyway.net Wed Apr 29 14:09:40 2015 From: patnjeff at keyway.net (PatnJeff Warner) Date: Wed, 29 Apr 2015 11:09:40 -0700 Subject: [MSA-talk] Symplectite Formation In-Reply-To: References: <20150429153838.6DA0C4090C67@minlists.org> <, > <15CF7C72-5044-48B2-81AB-F8777D5DFF31@vt.edu> <1430326616644.13359@fiu.edu> Message-ID: <55411E64.8010305@keyway.net> Tim and others. I was a co-author of the original Gooley paper on 76535. Reading today's comments brought back a flood of memories. It is amazing how much I remember from work done 41 years ago, especially considering that I retired 16 years ago. I have three comments: 1. The symplectites in 76535 look nothing like the images Tim linked to. Tim's images indeed look to me like advancing melt crystallization, similar to what I have seen as quartz-feldspar intergrowths in some pegmatites. 2. The reason I favored solid-state reaction between olivine and plagioclase (I speak for myself, not my co-suthors Ron Gooley, Robin Brett, and Joe Smyth) was that the symplectite occurred along all olivine-plagioclase boundaries that we observed, and was not concentrated at triple-points where three crystals came together. 3. We (Gooley et al.) recognized that the 76535 symplectite had too much Cr to match a reaction solely between olivine and plagioclase, but we did not seriously address that issue. best jeff *Jeff Warner * 213-405-1494 Los Angeles, CA 90010 On 4/29/2015 10:10 AM, Hahn Jr, Timothy Michael wrote: > All, > > I am grateful for all of the responses! I?ve looked into the > solid-state reaction between plagioclase and olivine, however the > clasts contain no plagioclase. Additionally, I don?t think we would > expect it to be a late-stage melt based of the reconstructed bulk > composition (too much chrome). We have entertained the idea of a > breakdown texture of a Cr-Garnet (Knorringite) but the stoichiometry > does not match, unless a considerable amount of FeO is Fe2O3 (which we > do not expect). In addition to the stoichiometry, the pressures > needed for garnet formation are lacking considerably! These are a few > of the many problems we have encountered. > > Tim > >> On Apr 29, 2015, at 12:56 PM, Stephen Haggerty > > wrote: >> >> ?Hi Tim: >> >> Enjoyed Bob's comment and am reminded: 1. an 'unpublishable' >> note from Robin Brett on the matter; and 2. of the heady lunar days & >> the wonderful UMass encounters with Bob Tracy & colleagues. >> We have looked at a large number of symplectites in mantle xenoliths >> [Field & Haggerty (1994) CM&P 118, 138-156; and Field (2008) Am >> Min 93, 618-631], in which many but not all are associated with >> garnet. Although we invoke a range of reactions [a liberty in the >> mantle!] the classic goes back to Ian McGregor (1974): >> Ol + Gt = Opx + Sp. One of your BS images looks very much like an >> advancing Ol-front. However, rather doubt that Larry or Hap would >> entertain Gt in your ET sample? >> >> Best regards, Steve Haggerty >> >> ------------------------------------------------------------------------ >> *From:*msa-talk-bounces at minlists.org >> > > on behalf of Robert Tracy >> > >> *Sent:*Wednesday, April 29, 2015 12:30 PM >> *To:*Bob Dymek >> *Cc:*msa-talk at minlists.org >> *Subject:*Re: [MSA-talk] Symplectite Formation >> Tim, >> >> I worked extensively on 76535 at that time with Steve Haggerty, >> although no publication resulted, and I agree entirely with Bob that >> the most reasonable interpretation of the features of the symplectic >> intergrowths suggest simultaneous crystallization of late-stage >> magmatic phases in a eutectoid form oin the interstices between >> larger olivine and plag grains. What he didn't mention, and I suspect >> he would agree with me on this, is that the proposed >> olivine-anorthite solid-state reaction was probably to a large extent >> intended to be a "wishful thinking" bit of evidence for lunar >> subsolidus metamorphism. >> >> Bob T. >> >> Dr. Robert Tracy >> Professor of Geosciences >> Associate Department Head >> Director, Museum of Geosciences >> Virginia Tech >> Blacksburg VA 24061-0420 >> 540-231-5980 >> 540-231-3386 (F) >> >> >> >> >> On Apr 29, 2015, at 11:38 AM, Bob Dymek > > wrote: >> >>> *Dear Tim, >>> >>> The "symplectites" in your extraterrestial sample invite a >>> comparison to those found in lunar troctolte sample 76535. The >>> origin of these intergrowths was the subject of a heated debate back >>> in the 1970s (and disagreement continued for a long time afterwards, >>> perhaps to this very day). The symplectites were interpreted >>> originally by Gooley et al. as the products of a solid-state >>> reaction between olivine+plagioclase. We offered the alternative >>> that the symplectites resulted from melt crystallization producing a >>> eutectoid-like intergrowth. Perhaps the information contained in >>> those papers would be of use to you in your studies. Good luck. >>> >>> Cheers, >>> >>> Bob Dymek >>> >>> >>> >>> *At 05:42 AM 4/29/2015, Hahn Jr, Timothy Michael wrote: >>>> Content-Language: en-US >>>> Content-Type: multipart/alternative; >>>> boundary="_000_B2295C2794A54F66BF07DC0B6525453Dvolsutkedu_" >>>> >>>> Dear all, >>>> >>>> I am a masters student currently working on a research project and >>>> I have come across an unusual symplectite. Myself and others have >>>> tried multiple explanations for the formation of these symplectites >>>> but everything usually ends up as a dead end. I have inserted a >>>> link containing two images of the symplectites (images were too >>>> large to include in the message). I was wondering if anyone might >>>> have some explanation for a formation mechanism? I should also add >>>> that these are extraterrestrial sample. */Any/*comments would be >>>> greatly appreciated! If anyone is interested I have additional >>>> material regarding these symplectites. >>>> >>>> These symplectites are found in Mg-rich olivine and pyroxene (Mg # >>>> > 85) clasts that are contained within breccias. The symplectites >>>> have sharp boundaries against the adjacent phases and appear to >>>> have some type of crystallographic control, which is indicated by >>>> the heterogenous nature of the chromite lamellae (this may indicate >>>> a polycrystalline precursor). Some of the symplectites contain >>>> minor FeNi metal, troilite, and Ca-pyroxene, as well as >>>> ???islands??? of orthopyroxene (if the symplectites represent a >>>> breakdown textures these could possibly be relict inclusions). I >>>> have reconstructed the bulk composition of the symplectites using >>>> broad beam analyses, as well as point counting from individual >>>> analyses. I have included the bulk composition below from both the >>>> broad beam analyses and point count reconstruction. There is a big >>>> difference between the two methods and this is probably due to the >>>> density consideration when using the point counting method or the >>>> errors associated with broad beam analyses. The stoichometry does >>>> not match any known mineral when using either the broad beam or the >>>> point count reconstruction as the starting composition. >>>> >>>> >>>> https://docs.google.com/document/d/1wD7sKfAoQrdrXuKjvyTctfslHnDw4zWm8mgijY3GOxA/edit?usp=sharing >>>> >>>> >>>> Thanks, >>>> >>>> */Timothy M. Hahn Jr. >>>> /* >>>> M.S. Geology Candidate >>>> University of Tennessee, Knoxville >>>> 2236 Fisher Place >>>> Knoxville, TN 37920 >>>> (314) 288-7360 >>>> >>>> >>>> >>>> >>>> *Point Count Reconstruction >>>> * >>>> SiO2 21.98 >>>> TiO2 0.09 >>>> Al2O3 2.19 >>>> V2O3 0.41 >>>> Cr2O3 40.41 >>>> MgO 16.87 >>>> CaO 0.31 >>>> MnO 0.47 >>>> FeO 17.02 >>>> Total 99.76 >>>> >>>> >>>> >>>> *Broad Beam >>>> * >>>> SiO2 39.6 >>>> TiO2 0.04 >>>> Al2O3 1.2 >>>> V2O3 0.2 >>>> Cr2O3 20.9 >>>> MgO 25.1 >>>> CaO 1.5 >>>> MnO 0.4 >>>> FeO 12.5 >>>> Na2O n.d >>>> Total 101.5 >>>> >>>> >>>> >>>> _______________________________________________ >>>> MSA-talk mailing list >>>> MSA-talk at minlists.org >>>> http://lists.minlists.org/mailman/listinfo/msa-talk >>> >>> Robert F. Dymek, Ph.D. >>> Professor of Geology >>> Department of Earth & Planetary Sciences >>> Rudolph Hall >>> Washington University >>> St. Louis, MO 63130 >>> 314-935-5344 (office) >>> 314-935-7361 (facsimile) >>> _______________________________________________ >>> MSA-talk mailing list >>> MSA-talk at minlists.org >>> http://lists.minlists.org/mailman/listinfo/msa-talk >> >> _______________________________________________ >> MSA-talk mailing list >> MSA-talk at minlists.org >> http://lists.minlists.org/mailman/listinfo/msa-talk > > > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk -------------- next part -------------- An HTML attachment was scrubbed... URL: From Katharina.Marquardt at uni-bayreuth.de Wed Apr 29 15:24:34 2015 From: Katharina.Marquardt at uni-bayreuth.de (Katharina Marquardt) Date: Wed, 29 Apr 2015 19:24:34 -0000 Subject: [MSA-talk] MSA-talk Digest, Vol 19, Issue 14 _ Symplectite Formation In-Reply-To: References: Message-ID: <556619FC.8080508@uni-bayreuth.de> Dear Tim, I think that the following publication might be of interest to you: Khisina, N R, R Wirth, and M A Nazarov. 2011. ?Lamellar Pyroxene-Spinel Symplectites in Lunar Olivine from the Luna 24 Regolith.? /Geochemistry International/ 49 (5). SP MAIK Nauka/Interperiodica: 449?58. doi:10.1134/S0016702911050041. http://dx.doi.org/10.1134/S0016702911050041. Furthermore, you might want to look for the work of Patrick Remmert, how worked on symplectites in his PhD. Good luck, Katharina Marquardt Am 2015-04-29 um 19:10 schrieb msa-talk-request at minlists.org: > Send MSA-talk mailing list submissions to > msa-talk at minlists.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.minlists.org/mailman/listinfo/msa-talk > or, via email, send a message with subject or body 'help' to > msa-talk-request at minlists.org > > You can reach the person managing the list at > msa-talk-owner at minlists.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of MSA-talk digest..." > > > Today's Topics: > > 1. Re: Symplectite Formation (Stephen Haggerty) > 2. Re: Symplectite Formation (Hahn Jr, Timothy Michael) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 29 Apr 2015 16:56:56 +0000 > From: Stephen Haggerty > To: Robert Tracy , Bob Dymek > Cc: "msa-talk at minlists.org" > Subject: Re: [MSA-talk] Symplectite Formation > Message-ID: <1430326616644.13359 at fiu.edu> > Content-Type: text/plain; charset="utf-8" > > ?Hi Tim: > > > Enjoyed Bob's comment and am reminded: 1. an 'unpublishable' note from Robin Brett on the matter; and 2. of the heady lunar days & the wonderful UMass encounters with Bob Tracy & colleagues. > > We have looked at a large number of symplectites in mantle xenoliths [Field & Haggerty (1994) CM&P 118, 138-156; and Field (2008) Am Min 93, 618-631], in which many but not all are associated with garnet. Although we invoke a range of reactions [a liberty in the mantle!] the classic goes back to Ian McGregor (1974): > > Ol + Gt = Opx + Sp. One of your BS images looks very much like an advancing Ol-front. However, rather doubt that Larry or Hap would entertain Gt in your ET sample? > > > Best regards, Steve Haggerty > > > ________________________________ > > From: msa-talk-bounces at minlists.org on behalf of Robert Tracy > Sent: Wednesday, April 29, 2015 12:30 PM > To: Bob Dymek > Cc: msa-talk at minlists.org > Subject: Re: [MSA-talk] Symplectite Formation > > Tim, > > I worked extensively on 76535 at that time with Steve Haggerty, although no publication resulted, and I agree entirely with Bob that the most reasonable interpretation of the features of the symplectic intergrowths suggest simultaneous crystallization of late-stage magmatic phases in a eutectoid form oin the interstices between larger olivine and plag grains. What he didn't mention, and I suspect he would agree with me on this, is that the proposed olivine-anorthite solid-state reaction was probably to a large extent intended to be a "wishful thinking" bit of evidence for lunar subsolidus metamorphism. > > Bob T. > > Dr. Robert Tracy > Professor of Geosciences > Associate Department Head > Director, Museum of Geosciences > Virginia Tech > Blacksburg VA 24061-0420 > 540-231-5980 > 540-231-3386 (F) > > > > > On Apr 29, 2015, at 11:38 AM, Bob Dymek > wrote: > > Dear Tim, > > The "symplectites" in your extraterrestial sample invite a comparison to those found in lunar troctolte sample 76535. The origin of these intergrowths was the subject of a heated debate back in the 1970s (and disagreement continued for a long time afterwards, perhaps to this very day). The symplectites were interpreted originally by Gooley et al. as the products of a solid-state reaction between olivine+plagioclase. We offered the alternative that the symplectites resulted from melt crystallization producing a eutectoid-like intergrowth. Perhaps the information contained in those papers would be of use to you in your studies. Good luck. > > Cheers, > > Bob Dymek > > > > At 05:42 AM 4/29/2015, Hahn Jr, Timothy Michael wrote: > Content-Language: en-US > Content-Type: multipart/alternative; > boundary="_000_B2295C2794A54F66BF07DC0B6525453Dvolsutkedu_" > > Dear all, > > I am a masters student currently working on a research project and I have come across an unusual symplectite. Myself and others have tried multiple explanations for the formation of these symplectites but everything usually ends up as a dead end. I have inserted a link containing two images of the symplectites (images were too large to include in the message). I was wondering if anyone might have some explanation for a formation mechanism? I should also add that these are extraterrestrial sample. Any comments would be greatly appreciated! If anyone is interested I have additional material regarding these symplectites. > > These symplectites are found in Mg-rich olivine and pyroxene (Mg # > 85) clasts that are contained within breccias. The symplectites have sharp boundaries against the adjacent phases and appear to have some type of crystallographic control, which is indicated by the heterogenous nature of the chromite lamellae (this may indicate a polycrystalline precursor). Some of the symplectites contain minor FeNi metal, troilite, and Ca-pyroxene, as well as ???islands??? of orthopyroxene (if the symplectites represent a breakdown textures these could possibly be relict inclusions). I have reconstructed the bulk composition of the symplectites using broad beam analyses, as well as point counting from individual analyses. I have included the bulk composition below from both the broad beam analyses and point count reconstruction. There is a big difference between the two methods and this is probably due to the density consideration when using the point counting method or the errors ass > ociated with broad beam analyses. The stoichometry does not match any known mineral when using either the broad beam or the point count reconstruction as the starting composition. > > > https://docs.google.com/document/d/1wD7sKfAoQrdrXuKjvyTctfslHnDw4zWm8mgijY3GOxA/edit?usp=sharing > > > Thanks, > > Timothy M. Hahn Jr. > > M.S. Geology Candidate > University of Tennessee, Knoxville > 2236 Fisher Place > Knoxville, TN 37920 > (314) 288-7360 > > > > > Point Count Reconstruction > > SiO2 21.98 > TiO2 0.09 > Al2O3 2.19 > V2O3 0.41 > Cr2O3 40.41 > MgO 16.87 > CaO 0.31 > MnO 0.47 > FeO 17.02 > Total 99.76 > > > > Broad Beam > > SiO2 39.6 > TiO2 0.04 > Al2O3 1.2 > V2O3 0.2 > Cr2O3 20.9 > MgO 25.1 > CaO 1.5 > MnO 0.4 > FeO 12.5 > Na2O n.d > Total 101.5 > > > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > > Robert F. Dymek, Ph.D. > Professor of Geology > Department of Earth & Planetary Sciences > Rudolph Hall > Washington University > St. Louis, MO 63130 > 314-935-5344 (office) > 314-935-7361 (facsimile) > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > > ------------------------------ > > Message: 2 > Date: Wed, 29 Apr 2015 17:10:56 +0000 > From: "Hahn Jr, Timothy Michael" > To: Stephen Haggerty > Cc: Bob Dymek , "msa-talk at minlists.org" > > Subject: Re: [MSA-talk] Symplectite Formation > Message-ID: > Content-Type: text/plain; charset="utf-8" > > All, > > I am grateful for all of the responses! I?ve looked into the solid-state reaction between plagioclase and olivine, however the clasts contain no plagioclase. Additionally, I don?t think we would expect it to be a late-stage melt based of the reconstructed bulk composition (too much chrome). We have entertained the idea of a breakdown texture of a Cr-Garnet (Knorringite) but the stoichiometry does not match, unless a considerable amount of FeO is Fe2O3 (which we do not expect). In addition to the stoichiometry, the pressures needed for garnet formation are lacking considerably! These are a few of the many problems we have encountered. > > Tim > > On Apr 29, 2015, at 12:56 PM, Stephen Haggerty > wrote: > > ?Hi Tim: > > Enjoyed Bob's comment and am reminded: 1. an 'unpublishable' note from Robin Brett on the matter; and 2. of the heady lunar days & the wonderful UMass encounters with Bob Tracy & colleagues. > We have looked at a large number of symplectites in mantle xenoliths [Field & Haggerty (1994) CM&P 118, 138-156; and Field (2008) Am Min 93, 618-631], in which many but not all are associated with garnet. Although we invoke a range of reactions [a liberty in the mantle!] the classic goes back to Ian McGregor (1974): > Ol + Gt = Opx + Sp. One of your BS images looks very much like an advancing Ol-front. However, rather doubt that Larry or Hap would entertain Gt in your ET sample? > > Best regards, Steve Haggerty > > > ________________________________ > > From: msa-talk-bounces at minlists.org > on behalf of Robert Tracy > > Sent: Wednesday, April 29, 2015 12:30 PM > To: Bob Dymek > Cc: msa-talk at minlists.org > Subject: Re: [MSA-talk] Symplectite Formation > > Tim, > > I worked extensively on 76535 at that time with Steve Haggerty, although no publication resulted, and I agree entirely with Bob that the most reasonable interpretation of the features of the symplectic intergrowths suggest simultaneous crystallization of late-stage magmatic phases in a eutectoid form oin the interstices between larger olivine and plag grains. What he didn't mention, and I suspect he would agree with me on this, is that the proposed olivine-anorthite solid-state reaction was probably to a large extent intended to be a "wishful thinking" bit of evidence for lunar subsolidus metamorphism. > > Bob T. > > Dr. Robert Tracy > Professor of Geosciences > Associate Department Head > Director, Museum of Geosciences > Virginia Tech > Blacksburg VA 24061-0420 > 540-231-5980 > 540-231-3386 (F) > > > > > On Apr 29, 2015, at 11:38 AM, Bob Dymek > wrote: > > Dear Tim, > > The "symplectites" in your extraterrestial sample invite a comparison to those found in lunar troctolte sample 76535. The origin of these intergrowths was the subject of a heated debate back in the 1970s (and disagreement continued for a long time afterwards, perhaps to this very day). The symplectites were interpreted originally by Gooley et al. as the products of a solid-state reaction between olivine+plagioclase. We offered the alternative that the symplectites resulted from melt crystallization producing a eutectoid-like intergrowth. Perhaps the information contained in those papers would be of use to you in your studies. Good luck. > > Cheers, > > Bob Dymek > > > > At 05:42 AM 4/29/2015, Hahn Jr, Timothy Michael wrote: > Content-Language: en-US > Content-Type: multipart/alternative; > boundary="_000_B2295C2794A54F66BF07DC0B6525453Dvolsutkedu_" > > Dear all, > > I am a masters student currently working on a research project and I have come across an unusual symplectite. Myself and others have tried multiple explanations for the formation of these symplectites but everything usually ends up as a dead end. I have inserted a link containing two images of the symplectites (images were too large to include in the message). I was wondering if anyone might have some explanation for a formation mechanism? I should also add that these are extraterrestrial sample. Anycomments would be greatly appreciated! If anyone is interested I have additional material regarding these symplectites. > > These symplectites are found in Mg-rich olivine and pyroxene (Mg # > 85) clasts that are contained within breccias. The symplectites have sharp boundaries against the adjacent phases and appear to have some type of crystallographic control, which is indicated by the heterogenous nature of the chromite lamellae (this may indicate a polycrystalline precursor). Some of the symplectites contain minor FeNi metal, troilite, and Ca-pyroxene, as well as ???islands??? of orthopyroxene (if the symplectites represent a breakdown textures these could possibly be relict inclusions). I have reconstructed the bulk composition of the symplectites using broad beam analyses, as well as point counting from individual analyses. I have included the bulk composition below from both the broad beam analyses and point count reconstruction. There is a big difference between the two methods and this is probably due to the density consideration when using the point counting method or the errors ass > ociated with broad beam analyses. The stoichometry does not match any known mineral when using either the broad beam or the point count reconstruction as the starting composition. > > > https://docs.google.com/document/d/1wD7sKfAoQrdrXuKjvyTctfslHnDw4zWm8mgijY3GOxA/edit?usp=sharing > > > Thanks, > > Timothy M. Hahn Jr. > > M.S. Geology Candidate > University of Tennessee, Knoxville > 2236 Fisher Place > Knoxville, TN 37920 > (314) 288-7360 > > > > > Point Count Reconstruction > > SiO2 21.98 > TiO2 0.09 > Al2O3 2.19 > V2O3 0.41 > Cr2O3 40.41 > MgO 16.87 > CaO 0.31 > MnO 0.47 > FeO 17.02 > Total 99.76 > > > > Broad Beam > > SiO2 39.6 > TiO2 0.04 > Al2O3 1.2 > V2O3 0.2 > Cr2O3 20.9 > MgO 25.1 > CaO 1.5 > MnO 0.4 > FeO 12.5 > Na2O n.d > Total 101.5 > > > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > > Robert F. Dymek, Ph.D. > Professor of Geology > Department of Earth & Planetary Sciences > Rudolph Hall > Washington University > St. Louis, MO 63130 > 314-935-5344 (office) > 314-935-7361 (facsimile) > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > > ------------------------------ > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > > > End of MSA-talk Digest, Vol 19, Issue 14 > **************************************** > -- Dr. Katharina Marquardt (n?e Hartmann) Raum 6.1.05 Tel.: +49 (0)921/55-3712 Tel. TEM(Titan)-Lab: +49 (0)921/55-3846 Tel. FIB(Scios)-Lab: +49 (0)921/55-3731 Mobil: +49 (0)178-375-2077 Email: katharina.marquardt at uni-bayreuth.de Email(privat):tinkamarquardt at gmail.com ___________________________________ Bayerisches Geoinstitut Universit?t Bayreuth Universit?tsstra?e 30 95440 Bayreuth -------------- next part -------------- An HTML attachment was scrubbed... URL: From lmilloni at eos.ubc.ca Thu Apr 30 04:07:15 2015 From: lmilloni at eos.ubc.ca (Leo Jakob Millonig) Date: Thu, 30 Apr 2015 01:07:15 -0700 Subject: [MSA-talk] Symplectite Formation In-Reply-To: References: Message-ID: <92a208d8608df4a009a1443490cdbfd8.squirrel@webmail.eos.ubc.ca> Hi Tim, your symplectites are strikingly similar to the textures produced during the solidification of undercooled eutectic alloys/melts. Which would be in line with some of the interpretations put forward in previous comments. Have a look at Figure 4a of "Han, X.J., Wei, B., 2002. Microstructural characteristics of Ni-Sb eutectic alloys under substantial undercooling and containerless solidification conditions. Metall and Mat Trans A 33, 1221?1228." In my opinion not only undercooling, but any sudden change in P-T-x (x could e.g. be a loss of volatiles) could cause oversaturation and thus crystallization of the melt or fluid leading to the observed disequilibrium textures. If you find evidence that the textures represent the solid-state breakdown of a precursor phase, or the reaction between two or more phases, please let the MSA-list know. All the best, Leo > Dear all, > > I am a masters student currently working on a research project and I have > come across an unusual symplectite. Myself and others have tried multiple > explanations for the formation of these symplectites but everything > usually ends up as a dead end. I have inserted a link containing two > images of the symplectites (images were too large to include in the > message). I was wondering if anyone might have some explanation for a > formation mechanism? I should also add that these are extraterrestrial > sample. Any comments would be greatly appreciated! If anyone is > interested I have additional material regarding these symplectites. > > These symplectites are found in Mg-rich olivine and pyroxene (Mg # > 85) > clasts that are contained within breccias. The symplectites have sharp > boundaries against the adjacent phases and appear to have some type of > crystallographic control, which is indicated by the heterogenous nature of > the chromite lamellae (this may indicate a polycrystalline precursor). > Some of the symplectites contain minor FeNi metal, troilite, and > Ca-pyroxene, as well as ???islands??? of orthopyroxene (if the > symplectites represent a breakdown textures these could possibly be relict > inclusions). I have reconstructed the bulk composition of the > symplectites using broad beam analyses, as well as point counting from > individual analyses. I have included the bulk composition below from both > the broad beam analyses and point count reconstruction. There is a big > difference between the two methods and this is probably due to the density > consideration when using the point counting method or the errors > associated with broad beam analyses. The stoichometry does not match any > known mineral when using either the broad beam or the point count > reconstruction as the starting composition. > > > https://docs.google.com/document/d/1wD7sKfAoQrdrXuKjvyTctfslHnDw4zWm8mgijY3GOxA/edit?usp=sharing > > > Thanks, > > Timothy M. Hahn Jr. > > M.S. Geology Candidate > University of Tennessee, Knoxville > 2236 Fisher Place > Knoxville, TN 37920 > (314) 288-7360 > > > > > Point Count Reconstruction > > SiO2 21.98 > TiO2 0.09 > Al2O3 2.19 > V2O3 0.41 > Cr2O3 40.41 > MgO 16.87 > CaO 0.31 > MnO 0.47 > FeO 17.02 > Total 99.76 > > > > Broad Beam > > SiO2 39.6 > TiO2 0.04 > Al2O3 1.2 > V2O3 0.2 > Cr2O3 20.9 > MgO 25.1 > CaO 1.5 > MnO 0.4 > FeO 12.5 > Na2O n.d > Total 101.5 > > > > _______________________________________________ > MSA-talk mailing list > MSA-talk at minlists.org > http://lists.minlists.org/mailman/listinfo/msa-talk > -------------------------------------- Dr. Leo J. Millonig Postdoctoral Fellow Department of Earth and Ocean Sciences University of British Columbia Vancouver, BC Canada V6T 1Z4 Tel. (604) 822-8238 http://www.eos.ubc.ca/about/researcher/L.Millonig.html --------------------------------------