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| AURICHALCITE with CACLITE Southwest Mine, Bisbee, Warren District, Mule Mountains, Cochise County, Arizona, USA |
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| Blue Opals |
Monday, November 23, 2015
Aurichalcite with Calcite E Vs Blue Opal
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Types of Wall Rock Alteration Types of Wall Rock Alteration 1. P otassic alteration Ø Potassic (or K-silicate) alterati... -
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Agate is a banded form of finely-grained, microcrystalline Quartz. The lovely color patterns and banding make this translucent gemsto...
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