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A study of the weathering of a biotite using the Mössbauer effect

Published online by Cambridge University Press:  05 July 2018

B. A. Goodman  and
M. J. Wilson
B. A. Goodman
Affiliation:
The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen, AB9 2QJ
M. J. Wilson
Affiliation:
The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen, AB9 2QJ
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Summary

The behaviour of iron in the weathering of biotite in a sedentary soil profile developed on appinite has been investigated using the Msbauer effect. Both Fe2+ and Fe3+ in sites with cis and trans hydroxyl groups were observed at various stages in the weathering sequence. The results indicate that there is little or no ordering of the octahedral cations in the fresh biotite and hydrobiotite, but in the more weathered interstratified vermiculite-chlorite samples Fe3+ concentrates in the more distorted sites. No evidence was obtained for the presence of an anisotropic recoil-free fraction.

Type
Research Article
Information
Mineralogical Magazine , Volume 39 , Issue 304 , December 1973 , pp. 448 - 454
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1973

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