Identifiction of a mid-infrared
electronic absorption band of Fe2+ in the distorted M(2)
site of orthopyroxene, (Mg,Fe)SiO3
|Don S. Goldman and George R.
Division of Geological and Planetary
California Institute of Technology
Pasadena, CA 91125
An electronic absorption band of Fe2+ in the distorted, six-coordinate M(2) site
of the common mineraf orthopyroxene, (Mg, Fe)SiO3, is
rdentified at 2350 cm-1. This band is attributed to the A1
- B2 transition within the split 5T2g
state of Fe2+ in C2v symmetry.
The gamma spectrum of hypersthene (top) from Sumit Rock, Oregon,
(bottom) from Bamble, Norway.