Journal article

An improved and extended internally consistent thermodynamic dataset for phases of petrological interest, involving a new equation of state for solids

TJB Holland, R Powell



The thermodynamic properties of 254 end-members, including 210 mineral end-members, 18 silicate liquid end-members and 26 aqueous fluid species are presented in a revised and updated internally consistent thermodynamic data set. The PVT properties of the data set phases are now based on a modified Tait equation of state (EOS) for the solids and the Pitzer & Sterner (1995) equation for gaseous components. Thermal expansion and compressibility are linked within the modified Tait EOS (TEOS) by a thermal pressure formulation using an Einstein temperature to model the temperature dependence of both the thermal expansion and bulk modulus in a consistent way. The new EOS has led to improved fitting..

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University of Melbourne Researchers


Awarded by ARC

Funding Acknowledgements

We thank K. Evans for her enthusiasm and direct involvement with generating the sulphur part of the data set story. R. White, J. Diener and E. Green are also thanked for suggestions and discussions on data set-related matters. We thank J. Ferry, J. Ganguly, M. Gottshalk and an anonymous reviewer for their helpful reviews, and J. Connolly for comments on TEOS. We thank M. Brown yet again for his editorial handling of our work. R. Powell thanks the support of ARC DP0451770 and DP0987731.