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  • Identifier contains "gc-"

http://dl.dropbox.com/u/66399955/GC-2.JPG
Part of the The Granite Gorge Metamorphic Suite, this is usually considered a metavolcanic, and its mineralogy is dominated by quartz and mica.

Both thin section images were taken at a 400x magnification.
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atom, dcmes-xml, json, omeka-xml, rss2