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Examination of four coarsely crystalline chlorites by X-ray and high-pressure d.t.a. techniques

Published online by Cambridge University Press:  14 March 2018

Robert L. Stone  and
E. J. Weiss
Robert L. Stone
Affiliation:
Department of Ceramic Engincering University of Texas
E. J. Weiss
Affiliation:
Department of Ceramic Engincering University of Texas
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Abstract

Because chlorite represents the highest order of mineral having a montmorillonite-illite like structure, it has been studied by the d.t.a. technique in water vapour atmospheres at pressures (absolute) in the range 0·001 mm of Hg to 2300 mm of Hg. The range of water vapour pressure makes profound changes in the thermograms, showing the very complex nature of the breakdown of the brucite-like layer which was not anticipated by other tests. The chlorite exotherm at 870°C can be completely suppressed by high pressure water vapour or can be greatly intensified by running in vacuum. The great differences in thermograms cannot be explained by chemical analyses or optical properties.

Type
Research Article
Information
Clay Minerals Bulletin , Volume 2 , Issue 13 , December 1955 , pp. 214 - 222
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1955

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References

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