On the Optical Characters of the Vertical Zone of Amphiboles and Pyroxenes: And on a New Method of Determining the Extinction Angles of These Minerals by Means of Cleavage Pieces
Open Access
- 1 January 1899
- journal article
- Published by JSTOR in Proceedings of the American Academy of Arts and Sciences
- Vol. 34 (12) , 311
- https://doi.org/10.2307/20020896
Abstract
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