Gold Run Creek Prospect, Kiana District, Northwest Arctic Borough, Alaska, USA
Location: This placer deposit is thought to be near the mouth of Gold Run Creek. It is in section 23, T. 22 N., R. 8 W., of the Kateel River Meridian. Cobb (1972, MF-386), location 8.
Geology: Placer gold occurs in alluvial deposits overlying kyanite schist on Gold Run Creek. A few ounces of placer gold were recovered during assessment work in 1931 or earlier. Scheelite is a common mineral in the placer concentrates, and kyanite, scheelite and wolframite make up a considerable portion of a sample obtained about 11 miles upstream from the mouth. Kyanite in the schist bedrock occurs in bands of coarse, bladed crystals, some as much as 10 inches in length. The width of the zone of kyanite in one prospect cut is 2 feet. It is exposed for a distance of 18 feet. Other narrower bands have been encountered in the same area (Anderson, 1947).
Workings: Assessment work was done to hold several claims on the creek in the early 1930's.
Commodities (Major) - Au; (Minor) - W
Development Status: Undetermined
Deposit Model: Placer Au-PGE (Cox and Singer, 1986; model 39a).
ReferencesAnderson, Eskil, 1947, Mineral occurrences other than gold deposits in northwestern Alaska: Alaska Territorial Division of Mines Pamphlet 5-R, 48 p. Cobb, E.H., 1972, Metallic mineral resources map of the Baird Mountains quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-386, 1 sheet, scale 1:250,000. Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p. Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in northern Alaska: U.S. Geological Survey Open-File Report 75-628, 106 p. Reed, I.M., 1932, Report of the placer deposits of the Squirrel River gold field: Alaska Territorial Department of Mines Miscellaneous Report 27-1, 33 p.
| Gold|| Scheelite|
2 entries listed. 2 valid minerals.
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Locality Updated: Mount Suímo Gemstone Mine, Belas, Sintra, Lisbon District, PortugalFrom Rui Nunes, 20th Dec 2014 16:55:54