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1. On the Pressure Cavities in Topaz, Beryl, and Diamond, and their bearing on Geological Theories

Published online by Cambridge University Press:  16 March 2015

David Brewster
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Extract

In this paper the author gave a brief account of the various phenomena of fluid and gaseous cavities which he had discovered in diamond, topaz, beryl, and other minerals. He described—

1. Cavities with two immiscible fluids, the most expansible of which has received the name of Brewstolyne, and the most dense that of Cryptolyne, from the American and French mineralogists.

2. Cavities containing only one of these fluids.

3. Cavities containing the two fluids, and also crystals of various primitive forms, some of which melt by heat and recrystallise in cooling.

4. Cavities containing gas and vapour.

Type
Proceedings 1860-61
Information
Proceedings of the Royal Society of Edinburgh , Volume 4 , 1862 , pp. 548 - 549
Copyright
Copyright © Royal Society of Edinburgh 1862

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