‡Ref.: Wilson, E.D. (1941), Tungsten deposits of Arizona, Arizona Bureau of Mines Bull. 148: 41.
Dale, V.B., et al (1960), Tungsten deposits of Cochise, Pima, and Santa Cruz Counties, Arizona, U.S. Bureau of Mines Report of Investigation 5650: 50.
Cooper, J.R. & L.T. Silver (1964), Geology and ore deposits of the Dragoon quadrangle, Cochise County, Arizona, USGS PP 416: 176-188.
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: 55 (Table 4).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 197.
MRDS database Dep. ID file #10039398, MRDS ID #M050027; and, Dep. ID #10112670, MAS ID #0040030108.
A former small surface and underground Cu-Pb-Zn-Ag-W mine located in sec. 23 and the NW ¼ sec. 25, T.16S., R.22E, 1¼ miles SW of Dragoon, on private land. First produced 1915. Owned by Lynn Burrell of Dragoon, AZ.
Mineralization is a vein deposit containing bornite and chalcopyrite with spotty galena, sphalerite and scheelite in a small quartz-calcite vein cutting partly silicified Pennsylvanian Horquilla Limestone with abundant thin beds of shale. The vein is coarsely crystalline grayish-white quartz, buff to brown calcite, irregular grains of scheelite and local concentrations of economic sulfides. An associated rock unit is the Texas Canyon Quartz Monzonite. The ore zone is 76.2 meters long, 0.46 meters thick, strikes N50E, and dips 75 to 80NW. Cuprotungstite was noted.
Local structures include Tertiary block faulting trending NNW. Regionally, Late Cretaceous or Early Tertiary N- to NW-trending folds and thrust faults override to the NE.
Workings include shallow cuts and numerous pits and a shaft. Workings total 27.43 meters long and 15.24 meters deep. Before WWI this mine produced a small tonnage of copper-silver ore and some tungsten concentrates around 1917-1918; in 1940, 400 pounds of scheelite concentrates were produced.
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Map Reference: 32°1'39"N , 110°4'1"W
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