Latitude: 32°6'25"N
Longitude: 110°4'12"W
‡Ref.: Kellogg, L.O. (1906), Sketch of the geology and ore deposits of the Cochise mining district, Cochise County, Arizona, Economic Geology: 1: 651-659.
Cooper, J.R. (1950) Johnson Camp area, Cochise County, Arizona, in Arizona zinc and lead deposits, Part I: Arizona Bureau of Mines Bulletin No. 156: 30-39.
Cooper, J.R. & L.T. Silver (1964), Geology and Ore deposits of the Dragoon quadrangle, Cochise County, Arizona, USGS PP 416: 168-169.
Livingston, D.E., Damon, P.E., Mauger, R.L., Bennett, R., and Laughlin, A.W. (1967) Argon 40 in cogenetic feldspar-mica mineral assemblages: Journal of Geophysical Research: 72(4): 1361-1375.
Keith, Stanton B. (1973), Arizona Bureau of Geology & Mineral Technology, Geol. Sur. Branch Bull. 187, Index of Mining Properties in Cochise County, Arizona: 56 (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).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 185.
MRDS database Dep. ID file #10039385, MRDS ID #M050011; and, Dep. ID #10283000, MAS ID #0040030122.
A former small underground Cu-Zn-Ag-Au mine located in the North-central sec. 26, T.15S., R.22E. (Dragoon 7.5 minute topo map), ½ mile NW of the town of Johnson, on private land. Produced initially in 1900. Closed 1921. Owned in part or at times by The Arizona & Development Co., Dragoon Mountain Copper Co., Arizona United Development Co., Mining and Development Corp. of America, Coronado Copper & Zinc Co. Operated by the Monong and Development Corp. of Dragoon Mountain.
Mineralization is argentiferous copper and zinc oxides, carbonates, and sulfides in tabular, bedded, pyrometasomatic replacement deposits in faulted and silicated Cambrian Abrigo Limestone and shale plus sandy dolomite. Ore control was favorable beds at intersections with small northeaster faults. Ore concentration was replacement in favorable beds. Alteration included garnetizaton, lime silicates and the oxidation of ore. The ore bodies were 99.06 meters long, 70.1 meters wide and 6.1 meters thick and had a dip of 25 to 40NE.
The most valuable deposits formed near the Copper Chief Fault. Ore was thickest and extended deepest near small northeaster faults. Another major ore body in the mine was a lens roughly 6 X 60 X 140 feet. The two major axes were in the plane of the beds and the longest axis was parallel to the dip.
Local structures include a fault system of NE-trending faults; Tertiary block faulting trending NNW; regional trends of Late Cretaceous or Early Tertiary N- to NW-trending folds and thrust faults overriding to the NE.
Workings include shaft(s). Workings were 426.72 meters in length overall. Over 24,000 tons of ore averaging 4.2 percent Cu and 0.5 Oz. Ag per ton were produced between 1910 and 1919. Producton ceased in 1923.
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