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Trioctahedral minerals in the soil-clays of north-east Scotland

Published online by Cambridge University Press:  14 March 2018

G. F. Walker
G. F. Walker*
Affiliation:
Macaulay Institute for Soil Research, Aberdeen
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Extract

This paper deals with a series of soil-clay minerals which have a widespread distribution in the north-east of Scotland. The original member is a biotite-like mica which breaks down readily in the soil into (i) a vermiculite or (ii) a montmorillonite, depending on the soil-forming conditions operating. Apart from this 'clay biotite' and its decomposition products, the main crystalline constituents of the Scottish soil-clays are a member of the kaolinite group and illite (' clay muscovite'). Iron and aluminium oxides are present in all the clays in the amorphous condition, but crystalline varieties are scarce. The distribution of the minerals and their relationship to the various soft-forming factors will form the subject of a separate communication; here, the nature of the clay minerals and their interrelationships are considered.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 29 , Issue 208 , March 1950 , pp. 72 - 84
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1950

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