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Saponite from the Dalradian meta-Limestones of north-east Scotland

Published online by Cambridge University Press:  09 July 2018

M. J. Wilson ,
D. C. Bain  and
W. A. Mitchell
M. J. Wilson
Affiliation:
The Macaulay Institute for Soil Research, Aberdeen
D. C. Bain
Affiliation:
The Macaulay Institute for Soil Research, Aberdeen
W. A. Mitchell
Affiliation:
The Macaulay Institute for Soil Research, Aberdeen
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Abstract

The Dalradian meta-limestones of the Banffshire coast have been investigated as part of a study of the mineralogy of Scottish sedimentary and metamorphic rocks, the main purpose of which is to assess the extent to which soil minerals are inherited from such parent rocks. Saponite was found to be a common constituent of the non-carbonate fraction. Thin sections of the limestones were examined microscopically and the textural relationships between the saponite and the other minerals, particularly those of undoubted metamorphic origin, suggest that the saponite was formed during the metamorphism. Recent reports of the hydrothermal synthesis of saponite at elevated temperatures and pressures support this hypothesis.

Type
Research Article
Information
Clay Minerals , Volume 7 , Issue 3 , July 1968 , pp. 343 - 349
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1968

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