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Experimental studies of fine-grained micas

II. The water content of wet-ground micas

Published online by Cambridge University Press:  09 July 2018

P. G. Rouxhet  and
G. W. Brindley
P. G. Rouxhet
Affiliation:
Materials Research Laboratory, and Department of Geochemistry and Mineralogy, Pennsylvania State University, University Park, Pennsylvania, U.S.A.
G. W. Brindley
Affiliation:
Materials Research Laboratory, and Department of Geochemistry and Mineralogy, Pennsylvania State University, University Park, Pennsylvania, U.S.A.
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Abstract

The water gained by two micas during a wet-grinding process (extra-water) has been evaluated. It was found to be proportional to the surface area and the amount was about 29 µmoles/m2 for a fluorphlogopite and about 16 µmoles/m2 for a muscovite. This estimation was made possible by eliminating the physically adsorbed water. The material contaminating the surfaces and the constitution water of muscovite were taken into account by the comparison of the two minerals and by the use of infrared spectroscopy in addition to thermovolumetric data. It is thought that the extra-water is related to a disordered and chemically modified surface layer of the particles. The bearing of these results on the nature of illite is indicated.

Type
Research Article
Information
Clay Minerals , Volume 6 , Issue 3 , July 1966 , pp. 219 - 228
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1966

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