|Quadrangle map, 1:250,000-scale||LG|
|Quadrangle map, 1:63,360-scale||A-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Frederich mine is located about 5 miles north of Fox along the Elliot Highway; NW1/4NE1/4 sec. 12, T. 2 N., R. 1 W., of the Fairbanks Meridian. Accuracy is within 2,000 feet.|
This site is a mineralized shatter zone in schist that is cut by granitic dikes. The lode consists of quartz and sulfides and their oxidation products. Kidneys of stibnite, some coarsely columnar and some finely granular, are more abundant near the footwall than the hanging wall (Brooks, 1916; B 649). Some of the ore is very rich in gold; production occurred from 1910 to 1912 (Brooks, 1911; Brooks, 1912). A shaft, a little more than 300 feet deep was sunk in a vein that dips from 70 degrees at the surface to 45 degrees at the bottom of the shaft, and is as much as 3.5 feet wide (Smith, 1913; B 525). Granitic rock was encountered 50 feet from the shaft in a crosscut into the hanging wall. A decomposed granite dike was encountered in a crosscut on a 300-foot level drift. Grab samples from probable mill ore taken in 1931 assayed 0.07 to 0.14 ounces of gold per ton (Hill, 1933).Antimony ore was mined in 1916 (Smith, 1917; BMB 153). Some stibnite was produced during World Wars I and II (Mulligan, 1974, p. 11).
|Geologic map unit||(-147.652444095905, 65.0215708674932)|
|Mineral deposit model||Gold-stibnite quartz vein.|
|Alteration of deposit||Quartz, sericite, calcite, ankerite; the stibnite is partly oxidized on the 100-foot level and the granite weathers rusty yellow.|
|Workings or exploration||Two shafts sunk; drifts on 100-foot, 200-foot, and 300-foot levels (Smith, 1913; B 525).|
|Indication of production||Yes; small|
|Production notes||Gold mined from 1910 to 1912; antimony ore mined in 1916 and during WWII, but total production is unknown (Cobb, 1976; OFR 76-633, p. 69).|
Brooks, A.H., 1911, The mining industry in 1910, in Brooks, A.K., and others, Mineral resources of Alaska, report on progress of investigations in 1910: U.S. Geological Survey Bulletin 480-B p. 21-43.
Brooks, A.H., 1912, The mining industry in 1911, in Brooks, A.H., and others, Mineral resources of Alaska, report on progress of investigations in 1911: U.S. Geological Survey Bulletin 520-A, p. 17-44.
Chapin, Theodore, 1914, Lode mining near Fairbanks, Alaska: U.S. Geological Survey Bulletin 592-J, p. 321-355.
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 Livengood quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-413, 2 sheets, scale 1:250,000.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Livengood quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-819, 241 p.
Ebbley, Norman, Jr., and Wright, W.S., 1948, Antimony deposits in Alaska: U.S. Bureau of Mines Report of Investigations 4173, 41 p.
Hill, J.M., 1933, Lode deposits of the Fairbanks district, Alaska: U.S. Geological Survey Bulletin 849-B, p. 29-163.
Joesting, H.R., 1942, Strategic mineral occurrences in interior Alaska: Alaska Territorial Department of Mines Pamphlet 1, 50 p.
Killeen, P.L., and Mertie, J.B., 1951, Antimony ore in the Fairbanks District, Alaska: U.S. Geological Survey Open-File Report 51-46, 43 p.
Mulligan, J.J., 1974, Mineral resources of the Trans-Alaska Pipeline corridor: U.S. Bureau of Mines Information Circular 8626, 24 p., 9 sheets, scale 1:250,000.
Smith, P.S., 1913, Lode mining near Fairbanks, in Prindle, L.M., A geologic reconnaissance of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Bulletin 525, p. 153-216.
Smith, S.S., 1917, The mining industry in the territory of Alaska during the calendar year 1916: U.S. Bureau of Mines Bulletin 153, 89 p.
|Reporters||C.J. Freeman, J.R. Guidetti Schaefer (Avalon Development Corporation)|
|Last report date||5/4/1999|