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Banner Mine group (Banner Mine; Hughes Mine), Stevens Mountain, Papago District (Sierrita District), Sierrita Mts, Pima Co., Arizona, USA

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Latitude & Longitude (WGS84): 31° 53' 17'' North , 111° 17' 7'' West
Latitude & Longitude (decimal): 31.8880555556, -111.285277778
Other regions containing this locality:Sonoran Desert, North America

‡Ref.: Ransome, F.L. (1922) Ore deposits of the Sierrita Mountains, Pima County, Arizona, in Contributions to Economic Geology (Short Papers and Preliminary Reports), 1921 - Part I.--Metals and Nonmetals except Fuels: U.S. Geological Survey Bulletin 725: 415-416.

Wilson, E.D., Moore, R.T., and O'Haire, R.T. (1960) Geologic map of Pima and Santa Cruz Counties, Arizona: Arizona Bureau of Mines, 1 sheet, scale 1:375,000 [now available as Arizona Geological Survey Map M-3-8].

Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 132 (Table 4).

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 126, 146, 278.

USGS Palo Alto Ranch Quadrangle topo map.

Arizona Bureau of Mines file data.

MRDS database Dep. ID file #10039559, MRDS ID #M050281; and, Dep. ID #10283634, MAS ID #0040190113.

A former small underground Pb-Ag-Zn-Au-Cu-Mn mine group located in the SE ¼ sec. 2, T.18S., R.10E., about 38 miles SW of Tucson. Discovered 1890. Owned at times, or in part, by the Francis Hagerman Mining Co.; and the Banner-Sierrita Mining Co.

Mineralization is oxidized, narrow, stranded, and lenticular quartz-calcite veins with disseminated argentiferous galena and spotty pyrite. Other sulfides and sulfosalts occur in sheared and metamorphosed Paleozoic limestone. An associated rock unit is a granite. Alteration included silicification, quartz-sericite-pyrite.

Workings include tunnel and shaft workings. 'Chloriders' produced high-grade silver ore in the late 1800's and early 1900's. Total sporadic production would be some 700 tons averaging about 60 oz. Ag/T, 40-50% Pb, 2% Cu, and minor Au.

Mineral List

Mineral list contains entries from the region specified including sub-localities

16 valid minerals.

Localities in this Region

  • Arizona
    • Pima Co.
      • Sierrita Mts
        • Papago District (Sierrita District)
          • Stevens Mountain

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