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Published March 1982 | public
Journal Article

The identification of Fe^(2+) in the M4 site of calcic amphiboles: reply

Abstract

Experimental evidence indicates that absorption from Fe^(2+) in the M4 site dominates the optical spectrum of most calcic amphiboles in the 1000 nm region in the spectrum. Contributions from Fe^(2+) in M1, M2 and M3 occur in the 850-1150 nm region, but the intrinsic intensity of absorption by Fe^(2+) in these sites is much less than that of Fe^(2+) in M4.

Additional Information

© 1982 Mineralogical Society of America. Manuscript received, July 30, 1981; accepted for publication, October 28, 1981.

Additional details

Created:
August 22, 2023
Modified:
October 23, 2023