Latitude: 31°26'8"N
Longitude: 109°54'46"W
‡Ref.: The Resources of Arizona - A Manual of Reliable Information Concerning the Territory, compiled by Patrick Hamilton, Scottsdale, AZ: 41.
Jones, E.L., Jr. & F.L. Ransome (1920), Deposits of manganese ore in Arizona, USGS Bull. 710-D: 103, 107, Plate IV.
Wilson, E.D. & G.M. Butler (1930), Manganese ore deposits in Arizona, Arizona Bureau of Mines Bull. 127: 39.
Farnham, L.L., Stewart, L.A., and Delong, C.W. (1961), Manganese Deposits of Eastern Arizona, US Bureau of Mines Information Circular 7990: 15.
Keith, Stanton B. (1973), Arizona Bureau of Mines Bull. 187, Index of Mining Properties in Cochise County, Arizona: 87 (Table 4).
MRDS database Dep. ID file #10027012, MRDS ID #M001715; and, Dep. ID #10234019, MAS ID #0040030021.
A former medium-production surface Mn-Cu mine located in the NE ¼ NW ¼ sec. 16, T.23S., R.24E, about ½ mile SW of the center of Bisbee, on a spur of Escabrosa Ridge, just West of Queen Hill, ½ mile SW of Bisbee and 700 feet WSW of the summit of Queen Hill. Discovered 1918. Owned by the Phelps Dodge Corp.
Mineralization is an irregular lode along a fissure zone that strikes N.80ºW. and dips 80ºN. The country rock is apparently Naco Limestone. but the deposit is close to the rather indefinate boundary between the Naco and Escabrosa Limestones, and may be partly in the Escabrosa. Ore is mostly hard manganese oxides with copper staining along the fracture zone cutting upper Mississippian Escabrosa or lower Pennsylvanian-Permian Naco Group limestone. The average lode width is 5 feet. The ore is partly as filling in fissures & partly as replacement deposit after limestone. Ore control was proximity to dikes and sills and faulting with associated brecciation. Ore concentration was bornite replacing pyrite. Alteration was gossan with Mn and Fe oxides induced by hydrothermal metamorphism.
Local structures incolude pre-mineralization faulting and tilting. The main fault directions ate N10W to N40E and S30W to N50W.
Workings include shallow open cuts. Some 800 to 900 tons of manganese ore were produced during WWI.
Mineral List
7 entries listed. 5 valid minerals.
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