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Anaconda Mine group | |
Wrightson Mining district Alternate NamesDouble Header, Ultima, Copper Mountain or Armada, Philadelphia, Little Joker, St. Louis, Silver Cave. CompanyAnaconda-Arizona Mg. Co., Altamirano, Boulder Mg. Co. Location? Mineral ProductsAg, Pb, Cu, Zn-, Au- Type of OperationsTunnel and shaft operations. Worked from early 1870's and intermttently through 1949, producting some 300 tons of ore averaging about 5% Pb, 30 oz. Ag/T, 3% Cu and minor Au.5 GeologyLensing quartz-fissure veins containing calcite and barite, and with shoots, stringers, and seams of argentiferous galena, chalcopyrite, sphalerite, tetrahedrite and pyrite. Veins are often vuggy with mineralization banded or lining vugs. Wall rock is Triassic rhyolite and latite volcanics.5
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