Greisen, Germany
Greisen is a highly altered granitic rock or pegmatite, usually composed predominantly of quartz and micas (mostly muscovite).
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Photo credit: © Phil Degginger / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: alteration, altered, endoskarn, germany, granite, granitic, greisen, highly, mineral, pegmatite, rock, specimen
