Columbia; Meier Prospect, Fairbanks District, Fairbanks North Star Borough, Alaska, USA
Location: The Columbia prospect is located in the NE1/4SE1/4 sec. 34, T. 2 N., R. 1 E., Fairbanks Meridian. This prospect is at an elevation of about 1770 feet on the south flank of Tungsten Hill at the head of Steele Creek. It is just southeast of the Spruce Hen group (FB101), approximately 3.2 miles east of the junction of the Steese and Elliott Highways. The prospect is included in locality 29 of Cobb (1972 [MF 410]).
Geology: The Columbia tungsten deposit consists of quartz-mica schist cut by quartz-scheelite stringers, under a hanging wall of porphyritic granite (Byers, 1957; Mertie, 1917). Workings in 1932 consisted of two adits, two shafts, a pit, and four trenches, all of which were caved by the 1950's (Byers, 1957).
Workings: The workings in 1932 consisted of two adits, two shafts, a pit, and four trenches, all of which were caved by the 1950's (Byers, 1957).
Commodities (Major) - W
Development Status: Undetermined
Deposit Model: W skarn deposit (Cox and Singer, 1986; model 14a)
ReferencesBerg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p. Byers, F.M., Jr., 1957, Tungsten deposits in the Fairbanks district, Alaska: U.S. Geological Survey Bulletin 1024-I, p. 179-216. Chapin, Theodore, 1919, Mining in the Fairbanks district: U.S. Geological Survey Bulletin 692-F, p. 321-327. Chapman, R.M., and Foster, R.L., 1969, Lode mines and prospects in the Fairbanks district, Alaska: U.S. Geological Survey Professional Paper 625-D, 25 p., 1 plate. Cobb, E.H., 1972, Metallic mineral resources map of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-410, 1 sheet, scale 1:250,000. Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Fairbanks quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-662, 174 p. Mertie, J.B., Jr., 1918 (1917), Lode mining in the Fairbanks district, Alaska: U.S. Geological Survey Bulletin 662-H, p. 403-424. Mulligan, J.J., 1974, Mineral resources of the Trans-Alaska Pipeline corridor: U.S. Bureau of Mines Information Circular 8626, 24 p. Thorne, R.L., Muir, N.M., Erickson, A.W., Thomas, B. I., Hedie, H. E., and Wright, W. S., 1948, Tungsten deposits of Alaska: U.S. Bureau of Mines Report of Investigation 4174, 51 p.
1 entry listed. 1 valid mineral.
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Locality Updated: Paranhos da Beira, Seia, Guarda District, PortugalFrom Rui Nunes, 21st Nov 2014 12:15:49