Startseite High-pressure compressibility and phase stability of Mn-dolomite (kutnohorite)
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High-pressure compressibility and phase stability of Mn-dolomite (kutnohorite)

  • Sarah E.M. Palaich EMAIL logo , Robert A. Heffern , Anke Watenphul , Jason Knight und Abby Kavner
Veröffentlicht/Copyright: 30. September 2015
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Abstract

We measured the bulk modulus and phase stability of a natural Mn-dolomite, kutnohorite, to 19 GPa. At room temperature, kutnohorite is stable in the rhombohedral dolomite phase up to 19 GPa, with an isothermal bulk modulus of 85(6) GPa (Kʹ = 4). The compressibility of kutnohorite is found to match well with both single and double carbonate trends with respect to bulk modulus and unit-cell volume. The thermoelastic properties measured in this study show that the Mn dolomite end-member fits well with the systematic of all the rhombohedral carbonates, both calcite (single carbonate) and dolomite (double carbonate) type.

Received: 2014-6-19
Accepted: 2015-4-25
Published Online: 2015-9-30
Published in Print: 2015-10-1

© 2015 by Walter de Gruyter Berlin/Boston

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