Goldman, Don S. and Rossman, George R. (1977) The spectra of iron in orthopyroxene revisited: the splitting of the ground state. American Mineralogist, 62 (1-2). pp. 151-157. ISSN 0003-004X. https://resolver.caltech.edu/CaltechAUTHORS:20130513-110955692
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Abstract
The optical absorption spectra of Fe^(2+) in the M(2) site of orthopyroxene have been reanalyzed, in view of the experimental observation of a mid-infrared band at 2350 cm^(-1) arising from an electronic transition within the split ^5T_(2g) ground state of the low-symmetry site. This analysis uses C_(2v) spectroscopic symmetry and a crystal-field potential which includes fourth-order harmonic terms. The order of the energy states is found to depend upon specific bond angles and lengths. The 2350 cm^(-1) band is assigned as a transition to the ^5B_2 state, calculated to lie above the ^5A_2 state. This result indicates that the entire splitting of the ^5T_(2g) ground state is 2350 cm^(-1).
| Item Type: | Article | ||||||
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| Additional Information: | © 1977 Mineralogical Society of America. Manuscript received, March 23, 1976; accepted for publication, July 21, 1976. We are indebted to Jeff Hare, Caltech, for numerous discussions concerning the point charge calculations and crystal-field interpretations of the orthopyroxene spectra. We thank Jack Huneke for the hypersthene sample from Oregon. | ||||||
| Group: | UNSPECIFIED, Division of Geological and Planetary Sciences | ||||||
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| Issue or Number: | 1-2 | ||||||
| Record Number: | CaltechAUTHORS:20130513-110955692 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130513-110955692 | ||||||
| Official Citation: | The spectra of iron in orthopyroxene revisited: the splitting of the ground state Don S. Goldman and George K. Rossman 151-157, 1977 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 38446 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Ruth Sustaita | ||||||
| Deposited On: | 13 May 2013 18:26 | ||||||
| Last Modified: | 26 Nov 2019 11:15 |
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