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The decomposition of biotite in the soil

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

A noticeable feature of many of the soils of north-east Scotland is the presence in them of glistening yellow flakes of decomposed biotite. The light-reflecting property of this material catches the eye even though the flakes themselves are often of very small size.

An analogous process to the breakdown of biotite as reported below occurs in the soil-clays of the area, and the present study was undertaken primarily in order to throw light on the mineralogical nature of the clay fractions of the soils, since the large amounts of anmrphous material associated with the soil-clay minerals renders less satisfactory the direct approach. The mineralogy of the soil-clays will be dealt with in a separate communication.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 28 , Issue 206 , September 1949 , pp. 693 - 703
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1949

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