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Genesis of Vermiculite and Mixed-Layered Vermiculite in the Evolution of the Soils of France

Published online by Cambridge University Press:  01 January 2024

Georges Millot  and
Thérèse Camez
Georges Millot
Affiliation:
Institut de Géologie, Université de Strasbourg, France
Thérèse Camez
Affiliation:
Institut de Géologie, Université de Strasbourg, France
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Abstract

Analysis of the argillaceous fraction of some podzolic soils and podzols of France has shown a double evolution of illite and chlorite through mixed layering into vermiculite. $ilite \to \left( {illite - vermiculite) \to vermiculite} \right) \\ chlorite \to \left( {chlorite - vermiculite} \right) \to vermiculite \\$

Vermiculite is more concentrated in the upper zones of the profiles where it constitutes 50 to 90 percent of the argillaceous fraction.

Type
Symposium on Occurrence and Origin of Vermiculite
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 10 , February 1961 , pp. 90 - 95
Copyright
Copyright © Clay Minerals Society 1961

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