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A saponite from Krugersdorp district, Transvaal

Published online by Cambridge University Press:  14 March 2018

E. R. Schmidt  and
H. Heystek
E. R. Schmidt
Affiliation:
Geological Survey, Mines Department, Union of South Africa
H. Heystek
Affiliation:
National Chemical Research Laboratory, South African Council for Scientific and Industrial Research
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Extract

Available information on the clay mineral saponite shows an amazing degree of variation and considerable discrepancies, probably due to investigation of impure samples. The clay mineral described in this paper was essentially pure and furthermore it seems to represent a magnesium end-member of the montmorillonite group.

Optical, chemical, X-ray, and differential thermal data of this particular saponite are presented, as well as data on some associated minerals, namely, a chlorite, two antigorites, and a chrysotile-asbestos.

The influence of Mg++, as the only natural occurring exchangeable base, on the nature of the X-ray diffraction and differential thermal diagrams leads to some interesting observations.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 30 , Issue 222 , September 1953 , pp. 201 - 210
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1953

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References

1. Selfridge, G. C., An X-ray and optical investigation of the serpentine minerals. Amer. Min., 1936, vol. 21, pp. 463-503. [M.A. 6-476.]Google Scholar
2. Ross, C. S. and Hendricks, S. B., Minerals of the montmorillonite group : their origin and relation to soils and clays. Prof. Paper U.S. Geol. Survey 1945, no. 205-B, pp. 23-79. [M.A. 10-26.]Google Scholar
3. Caillére, S. and Hénin, S., The properties and identification of saponite (bowlingite). Clay Minerals Bull., 1951, vol. 1, no. 5, pp. 138-144.Google Scholar
4. Kerr, P. F. et al., Reference clay minerals, American Petroleum Institute. Research Project 49, 1951. Columbia University, New York.Google Scholar
5. Brindley, G. W., editor, X-ray identification and crystal structures of clay minerals. 1951, Mineralogical Society, London. [M.A. 11-253.]Google Scholar
6. Midgley, H. G., A serpentine mineral from Kennack Cove, Lizard, Cornwall. Min. Mag., 1951, vol. 29, pp. 526-530.Google Scholar
7. Gruver, R. M., Precision method of thermal analysis. Jour. Amer. Ceram. Soc., 1948, vol. 31, pp. 323-328.Google Scholar
8. Nagy, B. and Bates, T. F., Stability of chrysotile asbestos. Amer. Min., 1952, vol. 37, pp. 1055-1058. [M.A. 12-180.]Google Scholar