Daisy Mine (Daisy shaft), Mineral Hill Mines (Azurite group; Old Azurite Mine; Copper Glance Mine), Mineral Hill, Mission complex, San Xavier, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, US
Ref.: Storms, W.R., and Bowman, A.B. (1957) Mining methods and practices at the Mineral Hill copper mine, Banner Mining Co., Pima County, Ariz.: U.S. Bureau of Mines Information Circular I.C. 7786, 25 p.
MacKenzie, F.D. (1959) Pyrometasomatic deposits at the Mineral Hill and Daisy mines, in Heindl, L.A., ed., Southern Arizona Guidebook II, combined with the 2nd annual Arizona Geological Society Digest: Arizona Geological Society, p. 193-194.
Cooper, J.R. (1960) Some geologic features of the Pima mining district, Pima County, Arizona: U.S. Geological Survey Bulletin 1112-C, p. 63-103, 1 sheet, scale 1:31,680.
Williams, S.A. (1961), Gerhardtite from the Daisy shaft, Mineral Hill Mine, Pima County, Arizona, Arizona Geological Society Digest: 4: 123.
Mining Engineering (1963): June, 1963: 49.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 134 (Table 4).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 183, 230, 336.
USGS Sahuarita Quadrangle topo map.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10039592, MRDS ID #M050385; and, Dep. ID #10186677, MAS ID #0040190191.
A former medium-sized surface and underground Cu-Ag-Zn-Pb-Au-W-Mo mine located in the SW ¼ sec. 36, T.16S., R.13E & the NW ¼ sec. 1, T.17S., R.13E., west of the Pima Mine at the foot of Mineral Hill; 6 mile N of Twin Buttes. Owned at times, or in part, by the Banner Mining Co.; and the Pima Mining Co. Subhumed by the Mission Mine.
Mineralization is partly oxidized, roughly banded and zoned, manto, pyrometasomatic orebody of magnetite and sulfides in garnetized Paleozoic limestone along the contact with Laramide quartz monzonite. Minor molybdenite and tungsten are present. The Mineral Hill fault is an important controlling local structure.
Both the oxide and the sulfide ore bodies were found by geophysical methods. The ore bodies are 1,005.84 meters long, 243.84 meters wide, 10.67 meters to the top of the ore with a depth to bottom of 121.92 meters.
Workings include shaft and open pit operations to a depth of 121.92 meters. Some 522,000 tons of ore were produced from underground workings during the period 1954-1962. This ore averaged about 3% Cu, 0.5 oz. Ag/T and some Zn and Pb. From 1962-1963, the Pima Mining Co. produced from its open pit some 3,200,000 tons averaging about 0.8% Cu, 0.1 oz. Ag/T and some Zn & Pb.
13 entries listed. 12 valid minerals.
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Locality Updated: Romãs, Sátão, Viseu District, PortugalFrom Rui Nunes, 30th Jul 2014 09:05:36