Latitude: 31°42'12"N
Longitude: 110°6'48"W
‡Ref.: Butler, B.S., Wilson, E.D., and Rasor, C.A. (1938b), Geology and ore deposits of the Tombstone district, Arizona, Arizona Bureau of Mines Bull. 143: 100-102, Pl. III.
Keith, Stanton B. (1973), Arizona Bureau of Mines Bull. 187, Index of Mining Properties in Cochise County, Arizona: 78 (Table 4).
Marvin, R.F., Stern, T.W., Creasey, S.C., and Mehnert, H.H. (1973) Radiometric ages of igneous rocks from Pima, Santa Cruz, and Cochise Counties, southeastern Arizona: U.S. Geological Survey Bulletin 1379, 27 p.
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 6 (Table 1).
Arizona Bureau of mines files.
MRDS database Dep. ID file #10102418, MRDS ID #M001412; and, Dep. ID #10112898, MAS ID #0040030680.
A former small underground Ag-Au-Mn-Cu mine located in the SE ¼ sec. 8, T.20S., R.22E. (Tombstone 7.5 minute topo map), 2½ miles SW of Tombstone, on private land. Owned by the San Pedro Leasing Co.
Mineralization is silver chloride and gold values associated with manganese oxide and quartz in an oxidized fault fissure vein in Laramide Uncle Sam Quartz Latite Porphyry. Mineralization also includes oxidized copper minerals. The fissure vein strikes N30E and dips 80NW.
Workings include a shaft workings on 3 levels. Several thousand tons of ore were produced in the 1880's and 1890's. A sporadic production of about 2,900 tons occurred from 1936 to 1950. The 1936 & 1937 production figures were included with the Bonanza figures in ABGMT-USBM file data.
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