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New data on wittichenite

Published online by Cambridge University Press:  05 July 2018

A. J. Criddle  and
C. J. Stanley
A. J. Criddle
Affiliation:
Department of Mineralogy, British Museum (Natural History), Cromwell Road London SW7 5BD
C. J. Stanley
Affiliation:
Department of Geological Sciences, University of Aston in Birmingham, Gosta Green Birmingham B4 7ET
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Summary

The wittichenite (BM 1977, 172) discovered in the course of a reflected light study of polished sections from the Seathwaite deposit, Cumbria (described earlier in this journal by Stanley and Criddle), is the first authenticated occurrence of the species in Great Britain; for this reason it was examined in detail and compared with a specimen (BM 1437) from Wittichen, the type locality. Chemical analyses, cell dimensions, visible-spectrum reflectances, quantitative colour values, and VHN's are provided. They are in agreement with previously published data for the species.

Type
Research Article
Information
Mineralogical Magazine , Volume 43 , Issue 325 , March 1979 , pp. 109 - 113
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1979

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