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A note on some Dalradian stilpnomelanes and their oxidation

Published online by Cambridge University Press:  05 July 2018

Colin M. Graham
Colin M. Graham*
Affiliation:
Department of Geology, University of California, Los Angeles, California 90024
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Summary

The widespread ferristilpnomelane in Dalradian metabasites of the south-west Scottish Highlands has usually formed by secondary oxidation of primary ferrostilpnomelane, probably during weathering. Ferrostilpnomelane oxidizes readily in polished thin sections open to the atmosphere over a period of months, and microprobe examination of the resulting ferristilpnomelane suggests a change in the role of potassium in the structure during oxidation.

Type
Research Article
Information
Mineralogical Magazine , Volume 40 , Issue 313 , March 1976 , pp. 467 - 472
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1976

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Footnotes

1

Present address: Dept. of Geology, The University, Edinburgh EH9 3JW

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