|Quadrangle map, 1:250,000-scale||WI|
|Quadrangle map, 1:63,360-scale||C-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Washington Creek, an eastern tributary to Glacier River, originates on the south flank of Dusty Mountain. It flows flows southwest and then west to join Glacier River about 5 miles west-southwest of Vermont Dome. About 2.5 miles west-southwest of Vermont Dome, Washington Creek is joined by an unnamed, northwesterly flowing tributary that heads against the divide at the heads of Acme Creek and Montana Gulch. The center of this placer is near the mouth of this southeast, headwater tributary to Washington Creek; it is in the SW1/4 section 7, T. 31 N. , R. 12 W., of the Fairbanks Meridian. The placers extend for about a mile upstream and a mile downstream. The location is accurate.|
Geologic descriptionMaddren (1913) reports that gold was discovered on Washington Creek in August, 1902, and that production between 1902 and 1909 was about $5,000 (approximately 260 ounces). Maddren reports that while some coarse, smooth gold was found in the gravels of Washington Creek, the amount of gold was insufficient to encourage serious mining. Reed (1938) reports some mining in the present stream bed from 1900 to 1910, but notes that the amount of gold recovered was not sufficient to warrant continued work. Heavy equipment for mining was being moved to Washington Creek from Mascot Creek in 1982 or 1983 (Bliss and others, 1988). Shafts were sunk by early miners to prospect for high channels along the lower creek but the results are not known. Brosge and Reiser (1972) collected a stream-sediment sample from Washington Creek that contains 700 to 3000 ppm antimony. Kurtak and others (1999) collected several panned-concentrate samples from Washington Creek that contain traces of pyrite and magnetite, but no visible gold. The rocks in the area are black siltstone and phyllite (Dillon and others, 1986).
|Geologic map unit||(-150.31635470835, 67.5234736786584)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||The modern stream bed was mined by hand methods, including open cuts and booming and shoveling (Reed, 1938). High channels were explored by prospect shafts and were possibly drift mined.|
|Indication of production||Yes|
|Production notes||Maddren (1913) reports that gold was discovered on Washington Creek in August, 1902, and that production between 1902 and 1909 was about $5,000 (approximately 260 ounces).|
Cobb, E.H., 1972, Metallic mineral resources map of the Wiseman quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-469, 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 Chandalar and Wiseman quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-340, 205 p.
Dillon, J.T., 1982, Source of lode and placer gold deposits of the Chandalar and upper Koyukuk Districts: Alaska Division of Geological and Geophysical Surveys Open-File Report AOF-158, 25 p., 1 sheet, scale 1:250,000.
Heiner, L.E., and Wolff, E.N., eds., 1968, Mineral resources of northern Alaska, Final report, submitted to the NORTH Commission: University of Alaska, Mineral Industry Research Laboratory Report No. 16, 306 p.
Kurtak, J.M., Klieforth, R.F., Clark, J.M., and Williams, E.M., 1999, Mineral investigations in the Koyukuk mining district, northern Alaska--Progress Report: U.S. Bureau of Land Management Open-File Report 74, 158 p.
Maas, K.M., 1987, Maps summarizing land availability for mineral exploration and development in northern Alaska, 1986: U.S. Bureau of Mines Open-File Report 10-87, 33 quadrangle overlays.
Maddren, A.G., 1910, The Koyukuk-Chandalar gold region: U.S. Geological Survey Bulletin 442-G, p. 284-315.
Maddren, A.G., 1913, The Koyukuk-Chandalar region, Alaska: U.S. Geological Survey Bulletin 532, 119 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.
Reed, I.M., 1938, Upper Koyukuk region, Alaska: Alaska Territorial Department of Mines Miscellaneous Report 194-7, 169 p.
|Reporters||J.M. Britton (Anchorage)|
|Last report date||8/9/2002|