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Bagdad Mine (Bagdad Copper Corp. Mine; Cyprus Bagdad Copper Co. Mine), Bagdad, Eureka District, Yavapai Co., Arizona, USA

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Latitude & Longitude (WGS84): 34° 35' 0'' North , 113° 12' 23'' West
Latitude & Longitude (decimal): 34.58333,-113.20639

‡Ref.: Lindgren, W. (1926), Ore deposits of the Jerome and Bradshaw Mountains quadrangle, Arizona, USGS Bull. 782.

Hurlbut, C.S., Jr. (1936), A new phosphate, bermanite, occurring with triplite in Arizona, American Mineralogist: 21: 656-661.

Butler, B.S. & Wilson E.D. (1938), Some Arizona Ore Deposits, Clifton-Morenci District, Arizona Bureau of Mines Bull. 145: 98.

Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 16, 18, 20, 25.

Schwartz, G.M. (1947), Hydrothermal alteration in the 'porphyry copper' deposits, Economic Geology: 42: 319-352.

Anderson, C.A. (1950), Alteration and metallization in the Bagdad porphyry copper deposit, Arizona, Economic Geology: 45: 609-628.

Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 47-49, 81-83.

Bagdad Mine Story. Arizona Department of Mineral Resources (1957) April, 1957, 7 pp. (unpublished).

Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 33, 57, 70, 87.

Dale, V.B. (1961), Tungsten deposits of Gila, Yavapai, and Mohave Counties, Arizona, U.S. Bureau of Mines Information Circular 8078.

Moxham, R.M., et al (1965), Gamma-ray spectrometer studies of hydrothermally altered rocks, Economic Geology: 60: 653-671.

Apland, Ken (1978) Cyprus Bagdad Copper Company 1970-1977. Historic Highlights. Arizona A.I.M.E. Spring Meeting, Bagdad, Arizona, April, 1978. 5 pp.

Medhi, P.K. (1978) Recent geological developments at the Bagdad porphyry copper deposits, Eureka mining district, Yavapai County, Arizona [abs.], in Jenney, J.P., and Hauck, H.R., eds., Proceedings of the Porphyry Copper Symposium, Tucson, Arizona, March 18-20, 1976: Arizona Geological Society Digest, v. 11, p. 79.

Blair, Gerry (1992), The Rockhound's Guide to Arizona: Helena, MT, Falcon Press.

Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department Mines & Mineral Resources Open File Rept. 92-10: 16 (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.

Arizona Department of Mines & Mineral Resources, 1994, Directory of Active Mines in Arizona, Incorporating Sand and Gravel Operations - 1994: Arizona Department of Mines and Mineral Resources Directory 42, 24pp.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 129, 154, 164, 186, 191, 224, 229, 302, 316.

Singer, D.A., Berger, V.I., and Moring, B.C. (2008): Porphyry copper deposits of the world: Database and grade and tonnage models, 2008. US Geological Survey Open-File Report 2008-1155.

U.S. Bureau of Land Management State Office Aquarius Planning Unit Step 3.

U.S. Bureau of Land Management Arizona Mining Claims Lead Files #38688, 19355, 22771 and 31840.

USGS Bagdad Quadrangle map.

Arizona Department of Mineral Resources Cyprus Bagdad Copper Co. active file.

MRDS database Dep. ID #10027594, MRDS ID #M003467; and Dep. ID #10162326, MAS ID #0040250001 (many more references on the mine and mill); and, Dep. ID #10283234, MAS ID #0040250624.

A former surface and underground Cu-Ag-Au-Pb-Zn-Mo-Ti-Rhodium mine located in the center of sec. 4, T.14N., R.9W. (Bagdad 15 minute topo map), on 8 claims on Copper Creek. Owned by the Bagdad Copper Corp. Discovered 1882. First produced 1906. Claims also in sections 5, 9 & 10, T14N, R9W; and, in sections 6 & 7, T14N, R9W; and, in sections 1, 10-14, T14N, R10W; and, sections 34-36, T15N, R10W.

Mineralization is 'porphyry copper' deposit with a blanket orebody hosted in the Brindle Formation. Ore control, where the largest quantity and highest grade ore occurs, is where intersecting or closely spaced faults have increased permeability. Mineralized fractures have attitudes (from most to least common) of N70E, 70N; N20E, 75W; N40W, 90. Ore concentration was hypogene metallization and supergene enrichment to copper ores, oxidation. Alteration included sericitization and argillization.

Area structures include the fracturing of the stock at Bagdad, important to this porphyry deposit, appears to be the result of the intersection of dike swarms.

Workings included a 465 foot deep, 3-compartment shaft. Production to 1951 was 125,991,174 pounds of Cu plus 85 oz. Au and 292,969 oz. Ag, and 85, 826 pounds of Mo.

Mineral List

38 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 granitic rocks

Age: Statherian (1600 - 1800 Ma)

Description: Wide variety of granitic rocks, including granite, granodiorite, tonalite, quartz diorite, diorite, and gabbro. These rocks commonly are characterized by steep, northeast-striking foliation. (1600-1800 Ma)

Comments: ~ 1.6 - 1.8 Ga

Lithology: Major:{granite,granodiorite,tonalite}, Minor:{quartz diorite,diorite,gabbro}

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

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