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Stevensite from the Whin Sill in the Region of the North Tyne

Published online by Cambridge University Press:  14 March 2018

B. A. O. Randall
B. A. O. Randall*
Affiliation:
Department of Geology, King’s College, Newcastle-upon-Tyne, University of Durham
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Summary

A stevensite occurring as an alteration product of pectolite in amygdale-like structures within the Whin Sill is described. Data given for the stevensite include optical properties, stain reactions, chemical analysis, X-ray powder data, and D.T.A. curves. The close similarity between many of the properties of sepielite and stevensite is indicated and D.T.A. is shown to be the most satisfactory method of distinguishing between the two minerals.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 32 , Issue 246 , September 1959 , pp. 218 - 225
Copyright
Copyright © 1959, The Mineralogical Society

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