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A dioctahedral clay vermiculite in a soil from Saucelle, Salamanca

Published online by Cambridge University Press:  14 March 2018

J. L. Martin Vivaldi
Affiliation:
Estación Experimental del Zaidín, Granada, Spain
M. Sanchez Camazano
Affiliation:
Centro de Edafología y Biología Aplicada, Salamanca, Spain
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Abstract

The <2μ equivalent spherical diameter (e.s.d.) fraction of the Ap horizon of a Brown Earth from Salamanca developed on Cambrian shales under a semi-arid climate with predominantly physical weathering has been studied. From X-ray diffraction results the mineralogical composition of this clay is: illite—70 per cent. kaolinite—10 per cent. and a “dioctahedral clay vermiculite”—20 per cent. The properties of the last mineral are detailed.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1961

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