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Origin of Albite Porphyroblasts in Rocks of the Ben More—Am-Binnein Area, Western Perthshire, Scotland

Published online by Cambridge University Press:  01 May 2009

K. A. Jones
K. A. Jones
Affiliation:
Department of Geology, The Queen's University, Belfast.
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Abstract

The eastern limit of a narrow belt of rocks, running from Co. Antrim through Cowal and into Perthshire, containing abundant albite porphyroblasts, has been mapped in detail. Albite is shown to have recrystallized as large porphyroblasts (up to 23 mm. in diameter in some cases) after the last main phase of deformation affecting these rocks. It is concluded that a large scale, late stage, regional metasomatism in the metamorphic history of the rocks of this area was the causal mechanism of the growth of albite porphyroblasts.

Type
Articles
Information
Geological Magazine , Volume 98 , Issue 1 , February 1961 , pp. 41 - 55
Copyright
Copyright © Cambridge University Press 1961

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