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The occurrence of uranium in association with cassiterite, wolframite, and sulphide mineralization in South-West England

Published online by Cambridge University Press:  05 July 2018

P. K. Swart  and
F. Moore
P. K. Swart
Affiliation:
Department of Geology, King's College, University of London, London WC2R 2LS
F. Moore
Affiliation:
Department of Geology, King's College, University of London, London WC2R 2LS
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Abstract

The U content of cassiterite (SnO2), wolframite (Fe,Mn)WO4, and various sulphides from two localities in the Cornubian batholiths of south-west England has been investigated. Cassiterites showed concentrations of U between 0 and 6 ppm with the higher concentrations corresponding to the darker colour bands. Sulphides contained no detectable U using the fissiontrack method, but high concentrations relate to micro-veining. This veining was also evident in associated wolframite and appeared to have a composition similar to an iron-arsenate mineral associated with the alteration of arsenopyrite. Wolframite exhibited a wide range of U concentrations with sharp zonation and several generations of ore deposition within one crystal. The U was not, however, associated with either the iron- or manganese-rich phases.

Type
Research Article
Information
Mineralogical Magazine , Volume 46 , Issue 339 , June 1982 , pp. 211 - 215
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1982

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Footnotes

*

Present address: Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge.

†

Present address: Department of Geology, University of Shiraz, Shiraz, Iran.

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