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X-ray studies of halloysite and metahalloysite

Part I. The structure of metahalloysite, an example of a random layer lattice

Published online by Cambridge University Press:  14 March 2018

G. W. Brindley  and
Keith Robinson
G. W. Brindley
Affiliation:
Physics Laboratories, University of Leeds
Keith Robinson
Affiliation:
Physics Laboratories, University of Leeds
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Extract

Metahalloysite is one of the kaolin group of minerals with a composition approximating to the formuia Al2O3.2SiO2.2H2O, and its structure is generally considered to be built of composite layers of atoms of the kind found in other minerals of this group. It differs from them most strikingly in that it can be produced by the dehydration of the hydrated mineral halloysite, which has the approximate composition Al2O3.2SiO2.4H2O. Both minerals give comparatively poor X-ray diagranm showing relatively few lines attd bands. The lines correspond to reflections from a basal spacing of about 7·2 Å. in metahalloysite and 10·1 Å. in halloysite.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 28 , Issue 203 , December 1948 , pp. 393 - 406
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1948

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