The 3d levels of ferrous ions in silicate garnets

Frank E Huggins

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Research Article| April 01, 1975

The 3d levels of ferrous ions in silicate garnets

Frank E Huggins

Department of Earth and Planetary Sciences, Massachusetts Institute of Technology Cambridge, Massachusetts 02139

¹ Present Address: Carnegie Institution of Washington, Geophysical Laboratory, 2801 Upton Street, N.W, Washington, D.C. 20008

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Author and Article Information

Frank E Huggins

Department of Earth and Planetary Sciences, Massachusetts Institute of Technology Cambridge, Massachusetts 02139

¹ Present Address: Carnegie Institution of Washington, Geophysical Laboratory, 2801 Upton Street, N.W, Washington, D.C. 20008

Publisher: Mineralogical Society of America

Received: 07 Oct 1974

Accepted: 11 Dec 1974

First Online: 11 Jul 2018

Online ISSN: 1945-3027

Print ISSN: 0003-004X

Mineralogical Society of America

American Mineralogist (1975) 60 (3-4): 316–319.

Abstract

By considering Mössbauer data for ferrous ions in almandine, an unambiguous choice can be made between the two different models (White and Moore, 1972; Runciman and Sengupta,1974) recently proposed for the five 3d levels of ferrous ions in almandine. Based on the quadrupole splitting value and its temperature dependence, the model of White and Moore (1972) is definitely favored. The Mössbauer data indicate that the separation of the two lowest levels is about 1100 cm^-1. This value enables considerably more precise estimates to be made of the crystal-field parameter and the crystal-field stabilizatlon energy.

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