A surface and underground Au prospect located on 2 unpatented claims in North-central sec. 31, and the center S½ sec. 30, T1N, R17W (protracted), about ¾ of a mile west of Tunnel Springs, on federal land. Owned by Messrs. Beeler, Chapin & J.V. Smale (1933).
Mineralization is spotty, finely divided, free gold in fractures and breccia with gouge, calcite, and iron and manganese oxides, in andesitic volcanics.
A mass of dark gray andesite porphyry, intrusive into light-colored tuffs and brown andesites, outcrops with a width of 1/8 to ½ mile and a considerable eastward extent.
Workings include several tunnels, winzes, shafts (1 at 58 feet deep), and shallow cuts.
References:
Wilson, E.D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. Arizona Bureau of Mines Bulletin 134: 119.
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: 116 (Table 4).
Arizona Bureau of Mines file data.
MRDS database Dep. ID #10113499, MAS ID #0040270395.
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Map Reference: 33°23'16"N , 114°3'46"W
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Mineral List:2 entries listed. 2 valid minerals.
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