‡Ref.: Weed, W.H. (1912-1913) The Copper Handbook.
Keith, Stanton B. (1973), Arizona Bureau of Mines Bull. 187, Index of Mining Properties in Cochise County, Arizona: 85 (Table 4).
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 4 (Table 1).
Arizona Bureau of Mines files.
MRDS database Dep. ID file #10104070, MRDS ID #M241093; and, Dep. ID #10280207, MAS ID #0040030582.
A former small underground Cu-Au-Ag group of mines located on 45 claims in Tombstone Canyon (1912), in secs. 26 & 27, T.23S., R.24E. (Bisbee 7.5 minute topo map), approximately 4 miles NW of Bisbee, on private land. Owned at times, or in part, by the Eureka Mining Co., North Bisbee Development Co., and the Bisbee Coalition Mining Co.
Mineralization is oxidized copper ores in irregular quartz veins in a Jurassic granitic porphyry stock.
Workings include a shaft(s) and tunnels. Workings are overall 109.73 meters in length and 152.4 meters deep. About 75 tons of ore were produced in 1911-1913.
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Map Reference: 31°29'18"N , 109°59'11"W
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