Quartz: Preferred Orientation in Rocks Produced by Dauphiné Twinning
- 12 June 1970
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 168 (3937) , 1342-1344
- https://doi.org/10.1126/science.168.3937.1342
Abstract
X-ray analyses of quartz aggregates deformed in the laboratory andin nature show a striking difference in the preferred orientation of the positive and negative trigonal forms. These observations may be accounted for by mechanically induced Dauphiné twinning. This orienting mechanism is unusual in that it requires no permanent strain.Keywords
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