U S Mine (U.S. Mine; Big Horn Mine; Bighorn Mine; Furlough Mine; Hauxhurst Mine; Furlough Pat. claim 3286; General Grant Mine; Lead Dollar Mine; United States Copper Mine), Hummingbird Spring, Maricopa Co., Arizona, USA
FluoriteU S Mine, Hummingbird Spring, Maricopa Co., Arizona, USA
Latitude: 33°43'18"N
Longitude: 113°1'35"W
‡Ref.: Niemuth, N.J. (1987), Arizona Mineral Development 1984-1986, AZ Dept. Mines & Min. Resources Directory 29; AZ Dept. Mines & Min. Resources (1989), Directory of active mines in Arizona, incorporating sand and gravel operations 1989-1990, AZ Dept. Of Mines & Min. Resources Directory; Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, AZ Dept. Mines & Min. Resources Open File Rept. 92-10: 10 (Table 1); USGS 15 minute Big Horn Mountains topo. map; Bur. Land Mgmt. plat 3286; AZ Dept. Min. Resources (ADMR) General Grant file; AZ Dept. Min. Resources (ADMR) U.S. file; AZ Dept. Min. Resources (ADMR) "U" file; Yale Peabody GNIS database (NOTE: this database is derived from USGS 1:24,000 topographic map data); MRDS files #10062143, 10210273 & 10161592.
A former surface and underground Cu-Pb-Au-Ag (trace) mine located in the NE¼ sec. 1, T.4N., R.8.W. (Big Horn Mountains 15 minute topo map). Discovered 1942. First production was 1987.
Mineralization includes secondary copper minerals.
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