Latitude: 32°31'54"N
Longitude: 114°3'41"W
A former Au-Ag-Cu mine located in the NE¼ sec. 20, T10S, R18W (Wellton Hills 7.5 minute topo map), 1 mile from the SW end of the Wellton Hills. Owned at times, or in part, by Draghi; and, Frazier.
Mineralization is spotty gold with silver and minor oxidized copper mineralization in an irregular, lensing quartz vein, with iron staining, in a strong fault zone of breccia and gouge cutting banded Mesozoic gneiss. Narrow aplite dikes in vicinity. The ore zone is 0.61 meters wide, striking N35W, and dipping 40NE.
Fine-grained, banded, biotite gneiss strikes NW and dips 40º SW, and is cut by a few narrow aplitic dikes. A prominent fault zone, marked by a maximum of about 8 feet of breccia and gouge, strikes N.35ºW. and dips 10º to 40ºNE, and contains an irregular quartz vein.
Workings include 2 tunnels, the upper of which is 65 feet (19.81 meters) long. This mine was worked sporadically over many years. Major production occurred in the mid-1930's. About 365 tons of ore were produced averaging about 0.54 oz. Au/T and 0.2 oz. Ag/T.
References
Wilson, E.D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. Arizona Bureau of Mines Bulletin 134: 174-175.
Wilson, E.D., Cunningham, J.B., and Butler, G.M. (1934), Arizona Lode Gold Mines and Gold Mining (revised 1967), Arizona Bureau of Mines Bull. 137: 151.
Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geological Survey Branch Bull. 192, Index of Mining Properties in Yuma County, Arizona: 161 (Table 4).
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 18 (Table 1).
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10283820, MAS ID #0040270888; and, MRDS Dep. ID #10027223, MRDS ID #M002538; and, Dep. ID #10234326, MAS ID #0040270401.
Mineral List
2 entries listed. 2 valid minerals.
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