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An 57Fe Mössbauer spectroscopic and X-ray diffraction study of New Zealand glauconites

Published online by Cambridge University Press:  09 July 2018

C. M. Cardile  and
I. W. M. Brown
C. M. Cardile
Affiliation:
Chemistry Division, Department of Scientific and Industrial Research, Private Bag, Petone, New Zealand
I. W. M. Brown
Affiliation:
Chemistry Division, Department of Scientific and Industrial Research, Private Bag, Petone, New Zealand
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Abstract

A comprehensive Mössbauer spectroscopic and X-ray diffraction study of six purified glauconites is presented. The Mössbauer spectra were computer-fitted with three Fe3+ and three Fe2+ doublets, both Fe species occupying the trans-OH and two cis-OH octahedral sites. In addition, a seventh smaller doublet is assigned to Fe3+ in tetrahedral coordination. It has been shown that an increasing IVFe3+ content directs VIFe3+ substitution to the cis-OH octahedrally coordinated sites. A correlation between the d(060) reflection and elemental composition is demonstrated.

Type
Research Article
Information
Clay Minerals , Volume 23 , Issue 1 , March 1988 , pp. 13 - 25
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1988

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