A Thermodynamic Model for Hydrous Silicate Melts
- Creators
- Silver, Lynn
- Stolper, Edward
Abstract
A simple thermodynamic model describing hydrous silicate melts has been applied to the systems albite-, diopside-, and silica-H_2O. The model is based on the assumption of ideal mixing of hydroxyl groups, H_2O molecules, and oxygens in the melt. Calculated and experimentally determined freezing-point depressions and H_2O solubilities for these systems are in agreement over substantial pressure and temperature intervals. The success of this model in accounting for observed phase equilibria of hydrous systems and its consistency with spectroscopic measurements of the concentrations of H-bearing species in glasses suggests that it accurately represents the interaction between H_2O and silicate melts at a molecular level.
Additional Information
© 1985 by The University of Chicago. We have benefited from discussions with A. L. Boettcher, T. S. Bowers, and I. S. E. Carmichael and from reviews by M.S. Ghiorso and A. Navrotsky. Supported by NSF Grant EAR-8212765. Division of Geological and Planetary Sciences Contribution #4124.Attached Files
Published - Silver_JGeol1985.pdf
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Additional details
- Eprint ID
- 33371
- Resolver ID
- CaltechAUTHORS:20120820-145038640
- NSF
- EAR-8212765
- Created
-
2012-08-22Created from EPrint's datestamp field
- Updated
-
2019-10-03Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 4124