|Quadrangle map, 1:250,000-scale||AR|
|Quadrangle map, 1:63,360-scale||A-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Located in canyon between Bismark Mountain and Shungnak Mountain near confluence with Bismark Creek in T. 19 N., R. 7 E., Kateel River Meridian. Shown as locality 19 in Mayfield and Grybeck (1978). Accurate to within 1000 ft. (300 m).|
Geologic descriptionCreek and bench placers. Creek gravels 1-3 ft. (0.3-1 m) deep in canyon; Au occurs in pockets in bedrock and lower 1 ft. (0.3 m) of gravel. Nephrite jade float along banks of river; nephrite and low-grade asbestos in greenstone and serpentine along river. Gold also occurs on false bedrock above Pleistocene till near confluence with Bismark Creek. Stream gravels are coarse, subangular with abundant boulders up to 3 ft. (1 m) in diameter.
|Geologic map unit||(-157.23775516328, 67.0304472192926)|
|Mineral deposit model||Placer (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Workings or exploration||Most of gravel is not frozen, in benches up to 25 ft. (9 m) above the river; prospect pits in gravel downstream from canyon did not reach bedrock; 40 ft. (13 m) drill hole in gravels below canyon did not reach bedrock (Reed, 1931, p. 15).|
|Indication of production||Yes; small|
|Production notes||Intermittent production during the period 1894 to 1940. May have produced as much as 10,000 oz (311 kg) of gold (Fritts, 1970, p. 54-55).|
Additional commentsConcentrates mainly magnetite along with rare nuggets of copper and silver (Anderson, 1945, p. 24-46).
Anderson, Eskil, 1945, Asbestos and jade occurrences in the Kobuk River region, Alaska: Alaska Territorial Department of Mines Pamphlet 3-R, 26 p.
Anderson, Eskil, 1947, Mineral occurrences other than gold deposits in northwestern Alaska: Alaska Territorial Division of Mines Pamphlet 5-R, 48 p.
|Reporters||K.R. Leonard (USGS), R.L. Elliott (USGS), J.M. Schmidt (USGS), S.W. Nelson (USGS retired)|
|Last report date||5/6/1997|