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Illite occurring in decomposed granite at Ballater, Aberdeenshire

Published online by Cambridge University Press:  14 March 2018

R. C. Mackenzie ,
G. F. Walker  and
R. Hart
R. C. Mackenzie
Affiliation:
Macaulay Institute for Soil Research, Aberdeen
G. F. Walker
Affiliation:
Macaulay Institute for Soil Research, Aberdeen
R. Hart
Affiliation:
Macaulay Institute for Soil Research, Aberdeen
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Extract

During soil survey in the Deeside district of Aberdeenshire, a light greenish-yellow clay-like material was observed penetrating and coating the altered rock along a vein in a granite outcrop freshly exposed in road-widening operations one mile north-east of Ballater. The material occurs in a crush-band in the rock, and the alteration is apparently due to the action of water, but since the band was still highly altered at the base of the exposure (about 25 feet from the surface) it is not certain from the field relationships whether the water was of hydrothermal origin or whether it percolated from the surface.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 28 , Issue 206 , September 1949 , pp. 704 - 713
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1949

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