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A celadonite-vermiculite series from the volcanic rocks of the Ochils, Stirlingshire

Published online by Cambridge University Press:  05 July 2018

W. J. French ,
M. D. Hassan  and
J. E. Westcott
W. J. French
Affiliation:
Geology Department, Queen Mary College, London
M. D. Hassan
Affiliation:
Geology Department, Queen Mary College, London
J. E. Westcott
Affiliation:
Geology Department, Queen Mary College, London
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Summary

Spherulitic and felted green to brown minerals are described from various volcanic rocks of the Western Ochils, Stirlingshire. They fill amygdales and replace pyroxenes and appear to be an interlayered series of sheet silicates from celadonite to vermiculite. The minerals are hydrothermal in origin and suggest the presence of a potassium-rich hydrous fluid at a late stage in the volcanic history.

Type
Research Article
Information
Mineralogical Magazine , Volume 41 , Issue 320 , December 1977 , pp. 481 - 485
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1977

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