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Copper Empire group (Best Chance; Blue Eagle; Rebecca No. 1; Grasshopper No. 22; Copper Empire group; Montana claim), Johnson Spring, Tibbetts District, Inyo Mts (Inyo Range), Inyo Co., California, USA

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List of minerals arranged by Strunz 10th Edition classification

No entries listed.


U.S. Bureau of Mines Open File Report MLA 86-83 (1983): Table 2, No. 79: p. 36.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10163216.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060270117.

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