Santa Rita Mtns Old Baldy District, Santa Rita Mts, Pima Co., Arizona, USA
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Old Baldy District, Santa Rita Mts, Pima Co., Arizona, USA

‡Ref.: Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 129 (Table 4); Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 126, 129, 210, 287, 290, 374; Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, AZ, USGS Bull. 582: 166-180; Schrader, F.C. (1917), The geologic distribution and genesis of the metals in the Santa Rita-Patagonia Mountains, AZ, Econ.Geol.: 12: 237-269; Drewes (1968); Drewes (1971a); Drewes (1972b); Drewes (1973); Arizona Bureau of Mines file data.

A Cu-Ag-Au-Mo mining area located in T.19S., R.14-15E., in the central to southern Santa Rita Mts. This is a northerly continuation of the Old baldy District from Santa Cruz County.

Mineralization is varied: (1) Scattered, small, and relatively weak, partly oxidized copper and local molybdenite mineralization in quartz fissure zones in Mesozoic volcanics and Laramide intrusives; and, (2) Gold placer deposits in an alluvial cone in the Madera Canyon.

Workings include scattered, small, and generally shallow prospects and mines worked intermittently since the 1880's. Total estimated and reported production is not more than a few hundred tons of sorted, high-grade copper ore. Considerable placer gold was recovered in the late 1880's.


Mineral list contains contents from all localities listed at bottom of page


Mineral List:
  		•  Azurite
  		•  Barite
  		•  Chalcocite
  		•  Dyscrasite
  		•  Ferrimolybdite
  		• Gold
  		•  Magnetite
  		•  Malachite
  		•  Marcasite
  		•  Molybdenite
  		• Piemontite
  		•  Schorl
  		•  Siderite
  		•  Smithsonite


    14 entries listed. 14 valid minerals.


    Other Localities in this Region:
    USA
    • Arizona
      • Pima Co.
        • Santa Rita Mts
          • Old Baldy District
            • Madera Canyon

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    Copyright © Jolyon Ralph 1993-2004. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Mysterious Ways (More websites)