Published August 1998
| public
Journal Article
The hydrous component in andradite garnet
- Creators
- Amthauer, Georg
-
Rossman, George R.
Abstract
Twenty-two andradite samples from a variety of geological environments and two synthetic hydroandradite samples were studied by Fourier transform IR spectroscopy. Their spectra show that H enters andradite in the form of OH-. Amounts up to 6 wt% H_2O occur in these samples; those from low-temperature formations contain the most OH-. Some features in the absorption spectra indicate the hydrogarnet substitution (SiO_4)^(4-)↔(O_4H_4)^(4-) whereas others indicate additional types of OH- incorporation. The complexity of the spectra due to multi-site distribution of OH- increases with increasing complexity of the garnet composition.
Additional Information
© 1998 Mineralogical Society of America. Manuscript received August 1, 1996. Manuscript accepted February 4, 1998. Paper handled by Anne M. Hofmeister. The authors thank G. Tippelt (Salzburg) for the hydroandradite synthesis and S. Ebner for typing the manuscript. We thank the Fulbright Commission and the Fonds zur Förderung der wissenschaftlichen Forschung in Vienna for financial support of GA through grant P10010GEO during his stay in Pasadena, and the National Science Foundation (U.S.A.) for support through grant no. EAR-9218980.Additional details
- Eprint ID
- 38230
- Resolver ID
- CaltechAUTHORS:20130502-093322305
- Fulbright Commission
- P10010GEO
- Fonds zur Förderung der wissenschaftlichen Forschung
- EAR-9218980
- NSF
- Created
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2013-05-02Created from EPrint's datestamp field
- Updated
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2019-10-03Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences