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An unusually expandable low-charge vermiculite

Published online by Cambridge University Press:  09 July 2018

A. Justo
Affiliation:
Instituto de Ciencia de los Materiales, CSIC, Apartado 1052, 41080 Sevilla, Spain
C. Maqueda
Affiliation:
Instituto de Recursos Naturales y Agrobiología, CSIC, Apartado 1052, 41080 Sevilla, Spain
J. L. Pérez-Rodríguez
Affiliation:
Instituto de Ciencia de los Materiales, CSIC, Apartado 1052, 41080 Sevilla, Spain
G. Lagaly
Affiliation:
Institut für anorganische Chemie der Universitiät Kiel, Olshausenstr. 40, D-2300 Kiel, Federal Republic of Germany

Abstract

A lamellar macroscopic Mg-vermiculite from Santa Olalla, Spain, which is accompanied by some talc and mica, shows a reversible expansion on glycolation due to the presence of layers with two different charges. The most probable origin of the vermiculite is by low-temperature hydrothermal transformation of phlogopite.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1987

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