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Oxhide Mine (Lower Ox Hide Mine; Upper Ox Hide Mine; Schultze Mine; Schultze group), Miami, Miami-Inspiration District, Globe-Miami District, Gila Co., Arizona, USA

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Latitude & Longitude (WGS84): 33° 23' 8'' North , 110° 55' 26'' West
Latitude & Longitude (decimal): 33.38556,-110.92389
Other regions containing this locality:Sonoran Desert, North America

A former surface and underground Cu-Ag mine located on 16 unpatented claims (1943), in the S½ (W½ ?; SE¼ ?) sec. 34, T1N, R14E (Inspiration 7.5 minute topo map), ½ mile SE of Needle Mountain summit, N bank of Needle Creek, about 2.7 miles SW of Miami, on private land. Discovered in 1894. Produced 1929-1984. Operators included Mr. David L. Kuck; Mr. Ralph Henderson; Alma; Eva; and Mr. Ed Schultze; O.L. Cross, and the Inspiration Consolidated Mining Co. Open-pit working began in 1968. Open pit operations began in 1967 at two pits. Upper Oxhide pit work ended in 1974; lower Oxhide open pit was still in operation (1982) heap leaching for copper. Called the Schultze Mine 1929 to 1962 with minor sporadic production and some leaching in 1961. Cyprus acquired Inspiration Consolidated Copper in July, 1988. Owned by the Cyprus Miami Mining Corp. (1988). NOTE: Alternate coordinates provided in mRDS file #10234066: 110°54'44"W, 33°22'48"N.

Mineralization is a deposit hosted in the Precambrian Pinal Schist and Schultze Granite. The ore zone is 540 meters long, 540 meters wide and 60 meters thick. Ore is disseminated in the granite and also some in the adjacent schist, and near the contact. Most ore is low-grade.

Workings include small tunnels and shafts, one 200 foot long tunnel, one 100 foot deep shaft, and small open cuts prior to 1943. Production began on a vein deposit, later was turned into 2 large open pits. In 1981, the production rate was approximately 12,500 short tons/day of sulfide ore.

Mineral List

5 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

1600 - 1800 Ma
Early Proterozoic metasedimentary rocks

Age: Statherian (1600 - 1800 Ma)

Stratigraphic Name: Pinal Schist; Yavapai Supergroup; Tonto Basin Supergroup; Vishnu Schist

Description: Metasedimentary rocks, mostly derived from sandstone and shale, with minor conglomerate and carbonate rock. Includes quartz-rich, mostly nonvolcanic Pinal Schist in southeastern Arizona and variably volcanic-lithic sedimentary rocks in the Yavapai and Tonto Basin supergroups in central Arizona. (1600-1800 Ma)

Lithology: Major:{metasedimentary,schist}, Minor:{conglomerate,carbonate,sedimentary}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

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.


Peterson, Nels P. (1962) Geology and Ore Deposits of the Globe Miami District, USGS PP 342: Plate 1.

Inspiration Consolidated Copper Co. Annual Reports 1966-1981.

Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 7 (Table 1).

Sawyer, M.B., Gurmendi, A.C., Daley, M.R., and Howell, S.B. (1992) Principal Deposits of Strategic and Critical Minerals in Arizona, U.S. Bureau of Mines Special Publication, 334 pp.

U.S. Bureau of Mines - Arizona Bureau of Geology and Mining Technology file data.

Arizona Department of Mineral Resources Ox Hide Mine file.

MRDS database Dep. ID #10046313, MRDS ID #M241219; and Dep. ID #10234066, MAS ID #0040070058; and Dep. ID #10234187, MAS ID #0040070060.

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