Reef Mine (Tungsten Reef Mine; Exposed Reef Mine; Sitric Mine; Reef group of claims), Carr Canyon, Hartford District (Huachuca Mountains District), Huachuca Mts, Cochise Co., Arizona, USA

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‡Ref.: Palache, C. (1941a), Crystallographic notes: Cahnite, stolzite, zincite, ultrabasite, American Mineralogist: 26: 429-436.

Wilson, E.D. (1941), Arizona Bureau of Mines Bull. 148: 48-49.

Weber, R.H. (1950), The Geology of the East-central Portion of the Huachuca Mountains, Arizona, University of Arizona, PhD. Thesis: 122-156.

Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, Arizona Bureau of Mines Bull. 158: 37.

Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 81

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: 28-32.

Lemmon, D.M., and Tweto, O.L. (1962) Tungsten in the U.S., USGS map, MR-25.

Keith, Stanton B. (1973), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 187, Index of Mining Properties in Cochise Co., Arizona: 67 (Table 4).

Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.: 156.

Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 5 (Table 1).

Sawyer, M.B., Gurmendi, A.C., Daley, M.R., and Howell, S.B. (1992) Principal Deposits of Strategic and Critical Minerals in Arizona, U.S. Bureau of Mines Special Publication, 334 pp.

Tuftin, S.E. and Armstrong, R.C. (1994) U.S. Bureau of Mines Open File Report Mineral Land Assessment (MLA) 1-94.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 165, 228, 362, 384.

U.S. Bureau of Mines file data.

MRDS database Dep. ID file #10008524, MRDS ID #D000755; and, Dep. ID #10233922, MRDS ID #M241502, MAS ID #0040030202.

A former small surface and underground W-Au-Ag-Pb-Cu-Zn (Te) mine located on 9 patented and 5 unpatented claims on the crest of the range (7,000 feet of altitude), at the head of Carr Canyon, in the SW ¼ sec. 14 & East-central sec. 15, T.23S., R.20E. (Miller Peak 7.5 minute topo map), S of Carr Canyon and about 12 miles W of Hereford. Discovered 1895. Produced 1875, 1916-1918, 1934-1942, 1953-1954, 1956. Reopened during WWI. Owned at times, or in part, by the Primos Chemical Co., Tungsten Reef Mines Co. (1918- ); and, the Exposed Reef Tungsten Co. ( -1918).

Mineralization is irregular and sporadic bunches and disseminations of scheelite with some gold and silver values and weak, base metal sulfides along fractures and at joint intersections in a quartz blanket at the base of the Cambrian Abrigo Limestone. Also includes oxidized copper minerals.

Cambrian Bolsa Quartzite and Abrigo Limestone have been weakly deformed by a series of thrust drag folds of gentle northwestward plunge and broken by fractures of NW- and northward trends.

Quartz veins, which klie near the base of the Abrigo formation & in general dip conformably in the flexed strata. There are two principal veins from a few feet to 12 feet apart.The lower vein ranges from less than 1 foot to 6 feet and the upper from about 2 feet to 15 feet thick. Coarsely crystalline grayish-white quartz and minerals comprise the vein filling.

Workings include numerous trenches, pits and open stopes and a few adit workings. Minor gold-silver production in the early 1900's and a total of several thousand tons of tungsten ore and concentrates produced in 1916-1918, 1934-1942, and 1955-1956 periods.

Mineral List

Chalcopyrite Fluorite Galena

Gold Hessite Hübnerite

Limonite Pyrite Quartz

Scheelite Sphalerite Stolzite

12 entries listed. 11 valid minerals.