![Schist / Crystallography / Placer deposit / Quartz / Gangue / Matter / Economic geology / Geology / Greisen Schist / Crystallography / Placer deposit / Quartz / Gangue / Matter / Economic geology / Geology / Greisen](https://www.pdfsearch.io/img/412ecb1b307b468ed519b91ead9b25f4.jpg) Date: 2012-07-25 12:39:35Schist Crystallography Placer deposit Quartz Gangue Matter Economic geology Geology Greisen | | U.S. Department of the Interior - U.S. Geological Survey Alaska Resource Data File Circle quadrangle Descriptions of the mineral occurrences shown on the accompanying figure follow. See
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