Latitude: 32°6'6"N
Longitude: 110°4'6"W
‡Ref.: Cooper, J.R. & L.T. Silver (1964), Geology and Ore Deposits of the Dragoon Quadrangle, Cochise County, Arizona, USGS PP 416: 173.
Livingston, D.E., Damon, P.E., Mauger, R.L., Bennett, R., and Laughlin, A.W. (1967) Argon 40 in cogenetic feldspar-mica mineral assemblages: Journal of Geophysical Research: 72(4): 1361-1375.
Keith, Stanton B. (1973), Arizona Bureau of Geology & Mineral Technology, Geol. Sur. Branch Bull. 187, Index of Mining Properties in Cochise County, Arizona: 56 (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).
MRDS database Dep. ID file #10104050, MRDS ID #M241021; and, Dep. ID #10112953, MAS ID #0040030124.
A former small surface and underground Cu-Zn-Ag mine located in East-central sec. 26, T.15S., R.22E. (Dragoon 7.5 minute topo map), on the SE edge of Johnson, on private land. Owned in part or at times by: Arizona United Mining Co., Cobriza Mines Development Co., and the Coronado Copper & Zinc Co. Operated by Mr. Alfred F. Bross. NOTE: Alternate coordinates provided: 32.1478N, 110.0647W.
Mineralization consists of lenses of copper-zinc carbonate ore in Mississippian Escabrosa Limestone in a small fault zone. Ore control was replacement beds near NE-trending faults and folds. The beds strike NW and dip 40NE.
Local structures include a small fault zone; a masive fracture system; and Tertiary blcok faulting, tilting NE.
Workings include an open pit and an adit. About 50 tons of ore were produced in 1905.
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