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Title:
Mössbauer spectra of synthetic Ca-Fe pyroxenoids and lunar pyroxferroite
Authors:
Dowty, Eric; Lindsley, D. H.
Affiliation:
AA(U. S. Geological Survey; Department of Geological and Geophysical Sciences, Princeton University), AB(Geophysical Laboratory, Carnegie Institution of Washington)
Publication:
Contributions to Mineralogy and Petrology, Volume 48, Issue 3, pp.229-232 (CoMP Homepage)
Publication Date:
09/1974
Origin:
SPRINGER
DOI:
10.1007/BF00383358
Bibliographic Code:
1974CoMP...48..229D

Abstract

Resolution of the iron sites in the Mössbauer spectra of Ca-Fe pyroxenoids is only partial, two doublets being apparent in each case, whereas there are up to nine cation sites in each structure. Thus the inner and outer doublets represent, respectively: two sites and two sites in Ca0.5Fe0.5SiO3 (ferrobustamite); five sites and two sites in Ca0.15Fe0.85SiO3 (pyroxferroite); and five sites and four sites in FeSiO3 (ferrosolite III). Disorder of iron and calcium which exists in the two calcium-bearing pyroxenoids is not readily apparent in the spectra.
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