Old Baldy District, Santa Rita Mts, Santa Cruz Co., Arizona, USA

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Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 166-180.

Whitacre, H.E., 1964, Geology of the Madera-Agua Caliente Canyon area, southern Arizona: Tucson, University of Arizona, M.S. thesis, 41 p.

Drewes, H.D. (1971) Geologic map of the Mount Wrightson quadrangle, southeast of Tucson, Santa Cruz and Pima Counties, Arizona: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-614, 1 sheet, scale 1:48,000.

Drewes, H.D. (1972) Cenozoic rocks of the Santa Rita Mountains, southeast of Tucson, Arizona: U.S. Geological Survey Professional Paper 746, 66 p.

Drewes, H.D. (1972) Structural geology of the Santa Rita Mountains, southeast of Tucson, Arizona: U.S. Geological Survey Professional Paper 748, 35 p., scale 1:12,000, 4 sheets.

Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 61 (Table 4). Arizona Bureau of Mines file data.

A Cu-Pb-Zn-Ag-Au-Mo mining area located in T.20S., R.14E., on the West slope of the Santa Rita Mts, on the drainage of that part of Madera Canyon which is within Santa Cruz Co.

Mineralization is spotty and weak, partially oxidized, base metal sulfides with associated minor gold and silver values, with or without quartz, along shear zones in LAramide intrusives or metamorphosed volcanics.

Workings are scattered, small, and generally shallow operations. Mostly prospects with no recorded production.

Mineral List

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

Albite var: Oligoclase Arsenopyrite Azurite Baryte Biotite Bornite Calcite

Cerussite Chalcocite Chalcopyrite Cuprite Epidote Galena 'Garnet'

Gold Hematite var: Specularite Jarosite Limonite Magnetite Malachite Molybdenite

Muscovite var: Sericite Orthoclase 'Psilomelane' Pyrite Quartz var: Smoky Quartz Sphalerite

28 entries listed. 20 valid minerals.

Localities in this Region

USA Arizona Santa Cruz Co. Santa Rita Mts Old Baldy District Jack Mountain Square Deal prospect Madera Canyon Carrie Nation Mine (Square Deal prospect) Daniels Mine (Sun Lode Molybdenum Mine) Lead prospect Littleshot Camp Copper Queen Mine (Old Madera Mine)

USA Arizona Santa Cruz Co. Santa Rita Mts Old Baldy District Madera Canyon Littleshot Camp Iron Cliff prospect (Littleshot prospect; Little Shot Mine; Velvet Mine) Lucky Ledge Mine Old Baldy prospects Velvet Mine Spear prospect White House Molybdenite prospects (McCleary prospects) Tucson prospect