Yellow Bird Mine, Lincoln Mine group, Stevens Mountain, Papago District (Sierrita District), Sierrita Mts, Pima Co., Arizona, USA
|Latitude & Longitude (WGS84):||31° 55' 7'' North , 111° 17' 51'' West|
|Latitude & Longitude (decimal):||31.91861,-111.29750|
|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 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).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 374.
Arizona Bureau of Mines file data.
A Pb-Ag-Zn-Cu-Au mine group located in the SW ¼ sec. 26 & the SE ¼ sec. 27, T.17S., R.10E. Owned at times, or in part, by the Lincoln Consolidated Mining Co.; 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. Paleozoic beds infolded in 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 1919, producing some 65 tons of ore at 14% Cu, 12 oz. Ag/T and minor gold.
4 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Olenekian - Ediacaran|
247.2 - 635 Ma
|Paleozoic sedimentary rocks|
Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052.