|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||Cobb (1972, MF-413), loc. 14; SW1/4NE1/4 sec. 12, T. 2 N., R. 1 W., of the Fairbanks Meridian. The Gilmer mine is located along both sides of the old railroad grade on the east slope of Vault Creek, about 1/2 mile south of the Fredericks gold mine. It is about 4.5 miles north of Fox near the Elliot Highway. Accuracy is within 2,000 feet.|
Geologic descriptionThis site consists of a fracture or shear zone that has been traced for 600-700 feet; it is 3 to 5 feet wide and contains shoots and kidneys of stibnite as much as 4 feet across (Brooks, 1916; B 649). In places the fracture zone appears to have little ore in it and in others the stibnite occupies the entire zone. Between the shoots, quartz and mineralized schists contain small kidneys of ore. The stibnite forms finely granular and fibrous aggregates and shows only a thin film of oxidation products. Fine grains of vitreous quartz occur in the masses of stibnite. Some fractured quartz is cemented by stibnite. Some gold and argentiferous galena are also present. The shear zone is in part bounded by smooth walls and in part by zones of fractured schist. Mica schist country rock strikes N 80 E, and dips 80 S. One sample contained 46.53% Sb and ore samples averaged 0.75 ounces of gold and a trace to 1.96 ounces of silver per ton (Joesting, 1942, ATDM Pamph. 1; Killeen and Mertie, 1951).
|Geologic map unit||(-147.652443344561, 65.015570816147)|
|Mineral deposit model||Gold-stibnite-quartz vein.|
|Alteration of deposit||Ore highly oxidized.|
|Workings or exploration||Workings caved and inaccessible in 1942 (Joesting, 1942; ATDM Pamph. 1).|
|Indication of production||Yes; small|
|Production notes||Antimony ore was mined on a small scale in 1915, but amount of production is unknown (Brooks, 1916, p. 29; B 642).|
Brooks, A.H., 1916, Mineral resources of Alaska, report on progress of investigations in 1915: U.S. Geological Survey Bulletin 642, 279 p.
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.
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.
|Reporters||C.J. Freeman, J.R. Guidetti Schaefer (Avalon Development Corporation)|
|Last report date||5/4/1999|