Latitude: 32°46'30"N
Longitude: 114°14'47"W
A former Au-Ag placer mining area located in West-central T7S, R19W & East-central T7S, R20W and in parts of T7 & 8S, R8, 9 & 10W, South & central Muggins Mountains. There were numerous small operators.
Mineralization is gold-bearing gravels, with reported rich pockets, in the headwater forks of Vinegarroon Wash. The gold was derived from disintegration of older gold placers in cemented Cretaceous gravels and quartz veins in adjacent Mesozoic schist and gneiss.
Workings were sporadic placer operations, mostly prior to 1900, with numerous surface workings.
References
Wilson, E.D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. Arizona Bureau of Mines Bulletin 134: 126.
Arizona Bureau of Mines Bull. 135 (1933), Arizona gold placers and placering: 21.
Wilson, E.D. (1937) Arizona Gold Placers and Placering. Arizona Bureau of Mines Bull. 142: 21.
Wilson, E.D. (1961) Gold Placers and Placering in Arizona. Arizona Bureau of Mines Bull. 168 (revised 1978): 23.
Johnson, M.G. (1972), Placer gold deposits of Arizona, USGS Bull. 1355: 70.
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: 164 (Table 4).
Arizona Bureau of Mines file data.
Yale Peabody GNIS database (NOTE: this database is derived from USGS 1:24,000 topographic map data).
MRDS database Dep. ID #10102462, MRDS ID #M002616; and, Dep. ID #10161621, MAS ID #0040270399.
Mineral List
1 entry listed. 1 valid mineral.
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