Primos group of claims (Primos Mine), Dragoon, Cochise District, Little Dragoon 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), AZ Bur. Mines Bull. 148: 42.

Wilson, E.D., et al (1950), Arizona zinc and lead deposits, part I, Arizona Bureau of Mines Bull. 156.

Cooper, J.R. & L.C. Huff (1951), Geological investigations and geochemical prospecting experiment at Johnson, Arizona, Economic Geology: 46: 731-756.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1088.

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

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

Cooper, J.R. & L.T. Silver (1964), Geology and ore deposits of the Dragoon quadrangle, Cochise County, Arizona, USGS PP 416.

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.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 165, 190, 228, 383.

Lemmon, D.M., unpublished data.

MRDS database Dep. ID file #10039519, MRDS ID #M050208.

A group of former small W mines on a group of 21 patented claims, extending between the quartz monzonite contact half a mile south of Johnson and a point about a third of a mile SW of the Bluebird Mine, a distance of 2¾ miles. The group is located in sec. 3, T16S, R22E, 2.5 miles SSW of Johnson; 4 miles NE of Dragoon,and near the former Johnson Camp, on private land. First produced 1900. Owned by the Primos Chemical Co. (1903- ). See also MRDS records for the Bluebird Mine (M050028) and the Dividend tunnel (M050026).

Mineralization is ore shoots/veins of irregular shape & distribution cutting the Texas Canyon Quartz Monzonite. The ore zone is tabular and 0.46 meters thick, strikes N50E, and dips 39SE.

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 a several hundred foot long adit, tunnels, and numerous open cuts, totaling 30.48 meters in length and 12.19 meters in depth. There is 1 shaft at 40 feet deep with a 60 foot drift at the bottom. Workings include the Bluebird Mine, Dividend tunnel, and a few smaller adits and shafts, but most of the production came from scores of open pits and small underhand stopes on the vein outcrops.

Production was 5½ tons of hübnerite ore; 4,500 pounds of hübnerite concentrates/month (circa 1941). Total to 1945 was estimated at 25,000 units of W03, of which 80% was taken from the property of the Primos Chemical Co.

Mineral List

Mineral list contains entries from the region specified including sub-localities

Beryl Chalcopyrite Covellite Fluorite

Fluorite var: Chlorophane Galena 'Garnet' Hübnerite

Ingodite Muscovite var: Sericite Pyrite

Quartz Scheelite Sphalerite Stolzite

21 entries listed. 13 valid minerals.

Localities in this Region

USA Arizona Cochise Co. Little Dragoon Mts Cochise District Dragoon Primos group of claims (Primos Mine) Bluebird Mine (Bluebird Mines; Tungsten Bluebird Mine; Bluebird Hill Mine; Primos Mine; Primos group) Dividend tunnel (Bluebird Mine; Bluebird Hill) Yankee Pride Mine (Yankee Pride adit)