Abstract
In recent years great progress has been made in applying thermodynamics to geology, that is, in obtaining and using thermodynamic data to predict and interpret petrologic phase relations. However, the application of thermodynamics has often been limited by the lack of reliable thermochemical data and the use of oversimplified models to derive approximate equations. This is especially true for equilibria involving silicate melts, for which, at present, there are still much less data than for crystalline phases. The purpose of this paper is to review both the available data and some concepts needed to begin to understand silicate melt thermodynamics. Although thermodynamics can be treated as a purely phenomenological subject dealing with bulk properties, much additional useful insight can be gained by correlating thermodynamic properties with structure on an atomic scale through statistical models. For silicate melts the questions of structure are extremely complex and only partially answered, but, inasmuch as possible, I shall point out the structural basis of observed thermodynamic behavior. This review is meant to be a relatively brief overview stressing recent data and new approaches rather than an exhaustive survey of the literature.
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Navrotsky, A. (1981). Thermodynamics of Mixing in Silicate Glasses and Melts. In: Newton, R.C., Navrotsky, A., Wood, B.J. (eds) Thermodynamics of Minerals and Melts. Advances in Physical Geochemistry, vol 1. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-5871-1_10
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DOI: https://doi.org/10.1007/978-1-4612-5871-1_10
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