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The Structure and Morphology of a Kaolin Clay from Les Eyzies (France)

Published online by Cambridge University Press:  01 January 2024

G. W. Brindley  and
J. J. Comer
G. W. Brindley
Affiliation:
The Pennsylvania State University, University Park, Pennsylvania, USA Department of Ceramic Technology, USA
J. J. Comer
Affiliation:
Mineral Constitution Laboratory, USA
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Abstract

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It is shown by x-ray analysis and electron micrographs that the clay from Les Eyzies is composed of about equal amounts of platy material (kaolinite), and rolled or tubular material (halioysite). Detailed examination of the electron micrographs shows oriented tubes or rolled sheets which may have originated from well-aligned platy material which has fractured and subsequently curled into rolled forms. Hexagonal features on the surfaces of the rolled forms are described. The laboratory results are correlated with geological data on the formation of the clay.

Type
Article
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 4 , February 1955 , pp. 61 - 66
Copyright
Copyright © The Clay Minerals Society 1955

Footnotes

Contribution No. 55–22 from the College of Mineral Industries.

References

Brindley, G. W. (ed.), 1951, X-ray identification and crystal structures of clay minerals: The Mineralogical Society, London, 345 p.Google Scholar
Comer, J. J., and Turley, J. W., 1955, Replica studies of bulk clays: J. App. Physics, v. 26, p. 346–350.CrossRefGoogle Scholar
De Keyser, W. L., and Degueldre, L., 1954, Note sur les rapports entre la morphologie et la structure des kaolins et halloysites: Bull. Soc. Belge Geol., v. 63, p. 100–110. See also Rapport Europees Congres Toegepaste Electronenmicroscopie: Rijksuniversiteit, Gent, p. 319-326.Google Scholar
MacEwan, D. M. C., 1946, Halloysite-organic complexes: Nature, v. 157, p. 159–160.CrossRefGoogle Scholar