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Transformation experimentale de chlorite en montmorillonite

Published online by Cambridge University Press:  14 March 2018

S. Caillère ,
S. Hénin  and
J. Esquevin
S. Caillère
Affiliation:
Muséum National d'Histoire Naturelle, 61, rue Buffon, Paris
S. Hénin
Affiliation:
Muséum National d'Histoire Naturelle, 61, rue Buffon, Paris
J. Esquevin
Affiliation:
Muséum National d'Histoire Naturelle, 61, rue Buffon, Paris
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Abstract

Acid treatment causes natural “swelling chlorites” (like the similar synthetic material prepared by the authors) to change into montmorillonite. Some labile chlorites from Lorraine iron ore show a similar change on treatment with sodium hydrosulfite + sodium tartrate, or on electrodialysis, although certain of these show no swelling initially, The corresponding transformation with true chlorites is very difficult to achieve. Results have been checked by thermobalance (figs.), D.T.A., X-rays.

The characteristic feature of “swelling chlorites” is the easy passage back to the montmorillonites from which they were probably formed; not all such labile chlorites show swelling.

Type
Research Article
Information
Clay Minerals Bulletin , Volume 2 , Issue 12 , December 1954 , pp. 166 - 170
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1954

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References

Références

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