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High-pressure stability of carbonates; quenching of calcite-II, high-pressure polymorph of CaCO (sub 3)

Claudine Biellmann, Francois Guyot, Philippe Gillet and Bruno Reynard
High-pressure stability of carbonates; quenching of calcite-II, high-pressure polymorph of CaCO (sub 3)
European Journal of Mineralogy (June 1993) 5 (3): 503-510

Abstract

The results of experiments on calcite at approx 45 GPa and 300- 2000 K in a laser-heated diamond-anvil cell are reported. In the unheated part of the samples, calcite was partially transformed into aragonite and preserved during quenching. In the heated parts of the sample aragonite, calcite and calcite-II were found. This is the first time that calcite-II has been quenched and characterized at ambient conditions. The sequence of formation, preservation or back-transformation during P and T quenching of the high-P polymorphs of CaCO (sub 3) in this kind of experiment has not yet been completely elucidated, but several explanations are proposed.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 5
Serial Issue: 3
Title: High-pressure stability of carbonates; quenching of calcite-II, high-pressure polymorph of CaCO (sub 3)
Affiliation: Universite de Rennes I, Laboratoire de Mineralogie physique, Geosciences Rennes (CNRS), Rennes Cedex, France
Pages: 503-510
Published: 199306
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 25
Accession Number: 1993-017377
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Secondary Affiliation: Institut de Physique du Globe de Paris, FRA, France
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 1993
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