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XI.—On certain Vegetable and Mineral Formations in Calcareous Spar.

Published online by Cambridge University Press:  17 January 2013

David Brewster
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Extract

When occupied several years ago in studying the fluid and gaseous cavities in minerals, my attention was drawn to certain remarkable formations in perfectly transparent specimens of calcareous spar. These formations were of two kinds—the one apparently of vegetable origin, and the other obviously mineral.

Type
Transactions
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 23 , Issue 1 , 1862 , pp. 97 - 98
Copyright
Copyright © Royal Society of Edinburgh 1862

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