A former underground Pb-Ag-F-V-Mo-Cu mine group comprised of 20 claims and located in the SW¼ sec. 31, T.4S., R.18W. (protracted), south of the Cleveland-Chicago vein, about 25 miles NE of Dome, 1.5 miles SE of the Castle Dome Mine, on federal land. Owned by G.B. Adams, Stephans, Hudson (1933). 20 claims were held by G.B. Adams in 1933.
Mineralization is irregular and spotty masses of coarsely crystalline galena, usually coated with anglesite, cerussite and lead oxides, in a gangue of crystalline fluorite and brown to black calcite with iron-stained gouge and brecciated wall rock, in lensing fault zones up to 8 feet wide, cutting Mesozoic shale, metamorphosed to slate. Intrusions of diorite-porphyry dikes and a few small irregular masses of quartz porphyry. Vanadinite and wulfenite are found locally in vugs in the mineralized zones and some minor oxidized copper minerals. The best ore occurs where the fault zone contains the reddish gouge. Fluorite occurs in greenish crystals to 1 inch in diameter.
Much of the area is covered by surficial gravels. The ore zone is 2.44 meters wide and 60.96 meters depth to bottom, strikes S23E, and dips 70NE.
Workings include several (4) relatively shallow shafts with minor level workings. The workings total 152.4 meters in length and 60.96 meters in depth. Operated sporadically from the early 1900's through about 1952, producing some 240 tons or ore averaging about 49% lead, 18 oz. Ag/T, and a very little Au and Cu.
References
Wilson, E.D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. Arizona Bureau of Mines Bulletin 134: 101-110.
Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 18.
Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, Arizona Bureau of Mines Bull. 158: 113.
Keith, Stanton B. (1978), State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma County, Arizona: 117 (Table 4).
Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10102458, MRDS ID #M002517; and, Dep. ID #10113257, MAS ID #0040270064.
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