[MSA-talk] P-T stability of BaCO3 (witherite)

Anton Chakhmouradian Anton.Chakhmouradian at umanitoba.ca
Wed May 21 14:50:51 EDT 2014

Hello Ben,

See Nicholls & Lafferty, 1942, Decomposition temperatures of some analytical precipitates. Barium carbonate. Industr. Engineer. Chem., Analyt. Ed., vol. 14, pp. 481-5. You will need to convert their mm Hg pressure values, though.

Let me know if you need a pdf of this paper.

Anton Chakhmouradian
University of Manitoba

From: msa-talk-bounces at minlists.org [mailto:msa-talk-bounces at minlists.org] On Behalf Of Ben Mandler
Sent: Wednesday, May 21, 2014 9:49 AM
To: MSA-talk at minlists.org
Subject: [MSA-talk] P-T stability of BaCO3 (witherite)

Hi all,
We are interested in using BaCO3 as a pressure medium for high-temperature experiments (up to ~1300 C) at relatively low pressures (4-7 kbar). We are concerned about the potential for BaCO3 decarbonation in the high temperature range. Yet information about the PT stability of BaCO3 is eluding us.
Does anyone know of any information on the P-T stability of BaCO3 over this range? Or has anyone had first-hand experience with this?
Thanks a lot,
Ben Mandler
Doctoral Candidate in Igneous Petrology
Department of Earth, Atmospheric and Planetary Sciences
Massachusetts Institute of Technology
Cambridge, MA 02139

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