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A note on the Pitchstones of Arran

Published online by Cambridge University Press:  01 May 2009

C. E. Tilley
C. E. Tilley
Affiliation:
Department of Mineralogy and Petrology, Cambridge.
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Abstract

Biotile is recognized as the dominant mineral of the arborescent, plumose, and scopulitic growths found in the Arran pitchstones. The chemical composition of the pitchstone group of glasses is briefly discussed in terms of the experimental data on the hydrous granite system.

Type
Articles
Information
Geological Magazine , Volume 94 , Issue 4 , August 1957 , pp. 329 - 333
Copyright
Copyright © Cambridge University Press 1957

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References

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