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U. S. Gypsum Company Mine (Pacific Portland Cement; California Gypsum group; Tracts 68; 69; 70; 78; Ward; Gillette; Imperial Gypsum and Oil Corporation), Fish Creek Mts, Imperial Co., California, USA



Detailed Mineral List:
Anhydrite
Formula: CaSO4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Biotite
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Gypsum
Formula: CaSO4 · 2H2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.


3 entries listed. 2 valid minerals.
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