Latitude: 31°41'35"N
Longitude: 110°4'9"W
‡Ref.: Church, J.A. (1903) The Tombstone, Arizona, mining district: American Institute of Mining Engineers, Transactions: 33: 11.
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: 84, Pl. IV.
Rasor, C.A. (1939), Manganese mineralization at Tombstone, Arizona, Economic Geology: 34: 790-803.
Romslo, T.M. & S.F. Ravitz (1947), Arizona manganese-silver ores, US Bureau of Mines Report of Investigation 4097.
Havens, R., et al (1954), Benefication of oxide manganese and manganese-silver ores from southern Arizona, US Bureau of Mines Report of Investigation 5024.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 30.
Keith, Stanton B. (1973), Arizona Bureau of Mines Bull. 187, Index of Mining Properties in Cochise County, Arizona: 79 (Table 4).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 342.
MRDS database Dep. ID file #10027041, MRDS ID #M001786; and, Dep. ID #10258048, MAS ID #0040030689.
A former small underground Ag-Mn mine located in the center of sec. 14, T.20S., R.22E, 1½ miles S of Tombstone, on private land. Operated by the Tombstone Development Co. (1941).
Mineralization is small, oxidized, argentiferous-manganese replacement orebodies in Pennsylvanian-Permian Naco Group Limestone along bedding plane slips cut by 'northeast' fissures. Located immediately north of the E-W-trending Prompter Fault. Beds dip 65-70S.
Workings include a shaft(s) with 8 levels, stopes were most extensive on the upper 4 levels. Workings totaled 106.68 meters long and 243.84 meters deep. A few hundred tons of ore were produced in the late 1800's.
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