The effect of fluid composition on the mechanism of the aragonite to calcite transition

Perdikouri, C.; Kasioptas, A.; Putnis, Christine; Putnis, Andrew

doi:10.1180/minmag.2008.072.1.111

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Authors

Perdikouri, C.

Kasioptas, A.

Putnis, Christine

Putnis, Andrew

Date

2008

Type

Conference Paper

Metadata

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Citation

Perdikouri, C. and Kasioptas, A. and Putnis, C. and Putnis, A. 2008. The effect of fluid composition on the mechanism of the aragonite to calcite transition, pp. 111-114.

Source Title

Mineralogical Magazine

DOI

10.1180/minmag.2008.072.1.111

ISSN

0026-461X

School

Department of Chemistry

URI

http://hdl.handle.net/20.500.11937/39422

Collection

Curtin Research Publications

Abstract

Experiments were performed to investigate the transformation of natural aragonite crystals to calcite by reaction with aqueous solutions of calcium carbonate at hydrothermal conditions for different periods of time. X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy and Laser ablation inductively coupled mass spectrometry (LA-ICP-MS) were used to characterize the reaction product. The results indicate that the replacement of aragonite by calcite follows an interface-coupled dissolution-precipitation mechanism. © 2008 The Mineralogical Society.