Latitude: 31°55'5"N
Longitude: 111°17'50"W
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 725J: 415.
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).
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10039617, MRDS ID #M050505.
A former small surface and underground Pb-Ag-Zn-Cu-Au-Baryte mine group located in the SW ¼ sec. 26 & the SE ¼ sec. 27, T.17S., R.10E., 6½ miles NE of the Palo Alto Ranch. Produced 1885-1931. Owned at times, or in part, by the Lincoln Consolidated Mining Co.; the Nelson Brothers; J.E. Woods; Silverta Mining & Milling Co.; and the Yellow Bird Silver Mines.
Mineralization is oxidized, argentiferous galena and sphalerite with minor copper in spotty replacement bodies in metamorphosed Paleozoic limestone; and argentiferous chalcocite, copper carbonates and oxides in shattered Paleozoic quartzite, and including carbonate boxwork after chalcopyrite. Paleozoic beds infolded in mesozoic sediments and volcanics. Alteration included quartz-sericite-pyrite.
Local structures include Paleozoic beds folded with Mesozoic sediments and volcanics.
Workings include shaft, tunnels, and open cuts. Prospected and worked in the late 1800's for high-grade Pb-Ag ore and sporadically from 1905 to 1931 producing some 65 tons of ore at 14% Cu, 12 oz. Ag/T and minor gold.
Mineral List
6 entries listed. 3 valid minerals.
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please
register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
Mineral and Locality Search
