Published January 1986
| public
Journal Article
A spectroscopic study of blue radiation coloring in plagioclase
- Creators
- Hofmeister, Anne M.
-
Rossman, George R.
Abstract
Blue color in sodic plagioclase is produced by electronic transitions of Pb in a manner similar to the mechanism causing color in amazonite (potassium feldspar colored blue-green by Pb electronic transitions). The two blue feldspar varieties have the following characteristics in common: (1) elevated Pb concentrations (usually greater than 0.01 wt.%), (2) structurally incorporated H^+, (3) similar response of the color to heating and irradiation, and (a) similar band shape, position, and polarization in the optical spectrum.
Additional Information
© 1986 Mineralogical Society of America. Manuscript received, May 29, 1984; Accepted for publication, September 9, 1985. This work was supported in part by NSF grant EAR-79-19987. We thank C. Bridges (Nairobi), C. Francis (Harvard), W. Larson (Pala International), and J. White (Smithsonian Institution) for providing samples; C. Martin, D. Blair, and S. Chan (Caltech) for advice with EPR spectroscopy; and Eric Dowty (American Museum of Natural History), Kurt Nassau (Bell Laboratories), and Martha Schaefer (Geophysical Laboratory) for helpful comments on the manuscript.Additional details
- Eprint ID
- 38172
- Resolver ID
- CaltechAUTHORS:20130430-080221399
- EAR-79-19987
- NSF
- Created
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2013-05-01Created from EPrint's datestamp field
- Updated
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2019-11-26Created 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
- 4060