Ref.: Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 105 (Table 4).
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10186596, MAS ID #0040190140.
A former group of surface and underground Au-Ag-Pb-Cu-Zn mines
A Ag-Au-Cu-Pb-Zn mine group located in secs. 4, 9 & 16, T.21S., R.10E. Owned at times, or in pat, by Goon; Lim; Soto; and The Richard M. & M. Co. NOTE: There are more mines in the group than listed hereunder (reference 1. refers to "etc." under mine names).
Mineralization is numerous, scattered, oxidized and weathered, irregular quartz-fissure veins containing spotty base metal sulfides in a Laramide granitic intrusive. There is near-surface enrichment.
Workings include shallow openings. This group produced some 400 tons of ore averaging about 0.6 oz. Au/T and 7 oz. Ag/T, 0.4% Cu and 0.2% Pb, during the 1930's.
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