Apex Claim, Pringle, Custer District, Custer Co., South Dakota, USA
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Production:: U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCU
Deposit:: PAGE,L R ET AL,U S G S P P 247 P 64 1953
Commodities (Major) - Beryllium, Mica
Development Status: Past Producer
Host Rock: Schist, Quartzite
Tectonic Structure: Southern Black Hills
3 entries listed. 2 valid minerals.
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