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A note on the thermal decomposition of chrysotile

Published online by Cambridge University Press:  14 March 2018

M. H. Hey  and
F. A. Bannister
M. H. Hey
Affiliation:
Department of Mineralogy, British Museum
F. A. Bannister
Affiliation:
Department of Mineralogy, British Museum
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Extract

During the course of a detailed X-ray study of chrysotile, antigorite, and gümbelite by E. Aruja we were asked to confirm some interesting results he had obtained on heating chrysotile to various temperatures. This we were able to do and also to provide additional data which were recently referred to in a paper by A. Hargreaves and W. H. Taylor. Although we have not succeeded in providing a completely satisfactory explanation of the optical changes observed on heating chrysotile our observations for a limited range of temperatures in the neighbourhood of 1000° C. are here recorded.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 28 , Issue 201 , June 1948 , pp. 333 - 337
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1948

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References

page 333 note 1 Aruja, E.. Dissertation for Ph.D. degree, University of Cambridge, 1943; Min. Mag., 1945, vol. 27, pp. 11 and 65.Google Scholar

page 333 note 2 Hargreaves, A. and Taylor, W. H., Min. Mag., 1945, vol. 27, p. 204.CrossRefGoogle Scholar

page 333 note 3 Caillère, S., Bull. Soc. Franç. Min., 1936, vol. 59, p. 163. [M.A. 6–475.]Google Scholar

page 334 note 1 B.M. 83118. Chrysotile; Johnson mine, Thetford, Megantic Co., Quebec. Compact, oil-green, yielding fibres 8½ cm. long, α 1·535, γ 1·550, positive elongation.

page 336 note 1 Donnay, J. D. H., Ann. (Bull.) Soc. Géol. Belgique, 1936, vol. 59, pp. B 215, B 289. [M.A. 6–460.]Google Scholar

page 336 note 2 Epprecht, W. and Brandenberger, E., Schweiz. Min. Petr. Mitt., 1946, vol. 26, p. 229. [M.A. 10–298.]Google Scholar