Hostname: page-component-7479d7b7d-rvbq7 Total loading time: 0 Render date: 2024-07-08T21:06:21.220Z Has data issue: false hasContentIssue false

Vermiculite as a Member in Mixed-Layer Minerals

Published online by Cambridge University Press:  01 January 2024

H. Heystek*
Affiliation:
Council for Scientific and Industrial Research, National Chemical Research Laboratory, Pretoria, South Africa

Abstract

X-ray diffraction and differential thermal analysis data are presented for colloid fractions from a soil and shales containing a vermiculite and a montmorillonoid; a chlorite and a vermiculite-chlorite mixed-layer mineral; and a montmorillonoid and a vermiculile-chlorite mixed-layer mineral. The minerals were identified by heating the clay fractions at various temperatures and by treating them with ethylene glycol and/or ammonium chloride.

Type
Article
Copyright
Copyright © The Clay Minerals Society 1955

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Barshad, Isaac, 1948, Vermiculite and its relation to biotite as revealed by base exchange reactions, x-ray analyses, differential thermal curves, and water content: Amer. Min., v. 33, p. 655678.Google Scholar
Gruner, J. W., 1934, The structure of vermiculites and their collapse by dehydration. Amer. Min., v. 19, p. 557575.Google Scholar
Hendricks, S. B., and Jefferson, M. E., 1938, Crystal structure of vermiculites and mixed vermiculite-chlorites: Amer. Min., v. 23, p. 851862. Mathieson, A. McL., and Walker, G. F., 1952, The structure of vermiculite: Clay Minerals Bull., v. 1, p. 272-276.Google Scholar
Stephen, I., 1952, A study of rock weathering with reference to the soils of the Malvern Hills. I, Weathering of biotite and granite; II, Weathering of appinite and ivy-scar rock: J. Soil Sci., v. 3, p. 1933, 219-237.Google Scholar
Van der Merwe, C. R., 1941, Soil groups and sub-groups of South Africa: Union of South Africa, Science Bull. 231.Google Scholar
Van der Merwe, C. R., and Heystek, H., 1955 Clay minerals of South African soil groups. III Semi-arid and desert soils: Soil Sci., v. 80, p. 479494.CrossRefGoogle Scholar
Walker, G. F., 1951, Vermiculites and some related mixed-layer minerals: in X-ray identification and crystal structures of clay minerals, Mineralogical Soc., London, p. 199223.Google Scholar