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James Mine (Nunnelley Mine; Ricky Dale Mine; San Juan Mine), Whetstone District, Whetstone Mts, Cochise Co., Arizona, USA

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Latitude & Longitude (WGS84): 31° 49' 59'' North , 110° 22' 59'' West
Latitude & Longitude (decimal): 31.8330555556, -110.383055556
A former small surface and underground W mine located in West-central sec. 26 and sec. 27, T.18S., R.19E, on National Forest land. First produced 1900.

Mineralization is spotty wolframite and minor scheelite in narrow quartz veins in medium-grained, Precambrian muscovite granite along a tongue of Pinal Schist. The quartz veins are 6 inches wide and strike E-W and dip 66 degrees N. Ore assays at 2%-3% WO3.

Workings are shallow openings. A few hundred pounds of tungsten concentrates were produced in 1943-1944.

Mineral List

2 entries listed. 1 valid mineral.

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Ref.: Hess, F.L. (1909) Note on a wolframite deposit in the Whetstone Mountains, Arizona, in Contributions to economic geology, 1908; pt. I, metals and nonmetals except fuels: U.S. Geological Survey Bulletin 380, p. 164.

Johnson, A.L. (1954) Arizona Department of Mining and Mineral Resources Engineers Report: 1.

Dale, V.B. (1957) U.S. Bureau of Mines Review of Examination Report, N. 36 (unpublished): 1.

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: 55-56.

Keith, Stanton B. (1973), Arizona Bureau of Mines Bull. 187, Index of Mining Properties in Cochise County, AZ: 91 (Table 4).

McColly, R.A., and Scott, D.C. (1982) Mineral investigation of the Whetstone Roadless Area, Cochise and Pima Counties, Arizona: U.S. Bureau of Mines Mineral Land Assessment Open File Report MLA 129-82, 22 p.: 9.

Chatman, M.L. (1994) U.S. Bureau of Mines Open File Report Mineral Land Assessment (MLA) 2-94: 19.

Lemmon, D.M., unpublished data.

Arizona Bureau of Mines files.

MRDS database Dep. ID file #10008525, MRDS ID #D000758; and, Dep. ID #10046271, MRDS ID #M241157; and, Dep. ID #10186044, MAS ID #0040030288.

Mineral and/or Locality  
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