Latitude: 31°41'30"N
Longitude: 110°5'20"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: 83-84.
Keith, Stanton B. (1973), Arizona Bureau of Mines Bull. 187, Index of Mining Properties in Cochise County, Arizona: 75 (Table 4).
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 4 (Table 1).
Arizona Bureau of Mines files.
MRDS database Dep. ID file #10046202, MRDS ID #M241048; and, Dep. ID #10233872, MAS ID #0040030601.
A former small underground Ag-Mn-Cu-Au mine located in the SW ¼ sec. 15, T.20S., R.22E. (Tombstone 7.5 minute topo map) about 2 miles SW of Tombstone, on private land. Owned by the Tombstone Development Co. (1938- ).
Mineralization is irregular, oxidized, pipe-like to tabular bodies of manganiferous silver ore, with minor copper, along the Prompter Fault system cutting strongly altered Cambrian Abrigo and Pennsylvanian-Permian Naco Group limestones. Vein strikes N60-70E and dips 60-80SE. Alteration was contact metamorphism.
Local structures include the Prompter Fault zone and Rattlesnake Branch Fault. Complex faulting locally. A N-S fault is located directly west, faulting Pennsylvanian and Cambrian limestone against Cretaceous Bisbee Group rocks.
Workings include a shaft(s). Up to 10,000 tons of manganiferous silver ore were produced from the late 1800's to about 1937.
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