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U S Mine (U.S. Mine; Big Horn Mine; Bighorn Mine), Hummingbird Spring, Maricopa Co., Arizona, USAi
Regional Level Types
U S Mine (U.S. Mine; Big Horn Mine; Bighorn Mine)Mine
Hummingbird SpringSpring
Maricopa Co.County

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Latitude & Longitude (WGS84):
33° 43' 18'' North , 113° 1' 35'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
Aguila798 (2011)28.1km
Wintersburg136 (2011)36.1km
Wickenburg6,806 (2017)38.8km
Morristown227 (2017)40.1km
Wittmann763 (2011)46.4km
Other/historical names associated with this locality:
Furlough Mine; Hauxhurst Mine; Furlough Pat. claim 3286; General Grant Mine; Lead Dollar Mine; United States Copper Mine

‡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.

Regions containing this locality

North America PlateTectonic Plate
Sonoran Desert, North AmericaDesert

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

No minerals currently recorded for this locality.

List of minerals for each chemical element

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
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