Little Mary Mine (Copper Hill Mine), Pearce District, Pearce Hills, Sulphur Springs Valley, Cochise Co., Arizona, USA
‡Ref.: Keith, Stanton B. (1973), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 187, Index of Mining Properties in Cochise County, Arizona: 70 (Table 4).
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 5 (Table 1).
MRDS database Dep. ID file #10046216, MRDS ID #M241070; and, Dep. ID #10161039, MAS ID #0040030173.
A former small surface and underground Cu-Ag-Au mine located in West-central sec. 35, T.17S., R.25E. (Pearce 7.5 minute topo map), approximately 3 miles NE of Pearce, on private land. Owned by the Little Mary Mining Co. Operated by the Santa Fe Mining Inc. (1986).
Mineralization is weak and spotty oxidized copper mineralization in fractured Tertiary andesite.
Local structures include flows that strike NW and have variable dip. Andesite is apparently younger than adjoining rhyolite.
Workings include a shaft and pit. During the period 1984-1986, Sante Fe carried out geological evaluation and rotary surface drilling at this mine. About 11 tons of ore were produced in 1903 and 1910.
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Locality Updated: Attikí Prefecture (Attica; Attika), GreeceFrom Debbie Woolf, 21st May 2013 22:30:39