Latitude: 31°25'15"N
Longitude: 109°53'50"W
‡Ref.: Bonillas, Y.S., Tenny, and Feuchere (1917), Geology of the Warren mining district: A.I.M.E. Transactions, Vol. 55: 329.
Trischka, C. (1938), Bisbee district, in Some Arizona ore deposits, Arizona Bureau of Mines Bull. 145: 37.
Bryant, D.G. & R.A. Metz (1966), Geology and ore deposits of the Warren mining district, in Titley, S.R. and Hicks, C.L., eds., Geology of the porphyry copper deposits, southwestern North America: 189-203, University of Arizona Press: 200-201.
Keith, Stanton B. (1973), Arizona Bureau of Mines Bull. 187, Index of Mining Properties in Cochise County, Arizona: 85 (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 #10046245, MRDS ID #M241111; and, Dep. ID #10283138, MAS ID #0040030584.
A former small underground Cu-Pb-Zn-Ag-Au mine located in the E½NW¼NW¼ sec. 22, T.23S., R.24E. (Bisbee 7.5 minute topo map), on private land at the NW edge of Briggs. Owned at times, or in part, by the Calumet & Arizona Mining Co. and the Phelps Dodge Corp.
Mineralization is irregular replacement orebodies of largely oxidized base metal ores in relatively unaltered Mississippian Escabrosa and Devonian Martin Limestones along fracture zones and closely associated with Jurassic porphyry dikes and sills. Ore control was the nearby dikes and sills, and faulting and associated brecciation. Ore concentration was bornite replacing pyrite. Alteration was gossan with Mn and Fe oxides induced by hydrothermal metamorphism.
Local structures include common pre-mineralization faulting and tilting. Main fault directions are N10W to N40E and S30W to N50W.
Workings include a shaft(s). Probably several hundred thousand tons of ore were produced and included in Calumet & Arizona and Phelps Dodge yearly figures.
Mineral List
4 entries listed. 3 valid minerals.
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