|Quadrangle map, 1:250,000-scale||HC|
|Quadrangle map, 1:63,360-scale||A-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||USGS MF-376, Loc. 2. Location is at Stuyahok Mines symbol on Holy Cross A-4 topographic map.|
Geologic descriptionThe area is underlain mainly by andesitic to dacitic flows and agglomerates, andesitic and felsic tuffs, volcaniclastic sandstones and siltstones, and graywacke of the Jurassic and Lower Cretaceous Koyukuk terrane. Scattered throughout the area are younger (Tertiary?) felsic and mafic dikes which cut the older rocks. A complete geologic description of the Stuyahok area is available in USGS Open-File Report 96-505-A (Miller and others, 1996) .
|Geologic map unit||(-160.966576481685, 62.0601004010274)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Tertiary/Quaternary|
|Workings or exploration||Surface: Hydraulic and dragline methods used. Drilling and sampling was done in gold placer deposits in 1994 by a crew from Calista Corporation and in 1995 by the USGS and Calista Corporation. A cut was leased and mined from 1994 through 1996.|
|Indication of production||Yes; small|
|Production notes||Cobb (1973) estimated production at 23,000 - 30,000 oz. of Au. Mined from 1921-1940.|
|MRDS Number||A010702; A013469|
Cobb, E.H., 1972, Metallic mineral resources map of the Holy Cross quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-376, 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 Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p.
Harrington, G.L., 1918, The Anvik-Andreafski region, Alaska (including the Marshall district): U.S. Geological Survey Bulletin 683, 70 p.
Miller, M.L., Bundtzen, T.K., Keith, W.J., Bailey, E.A., Bickerstaff, Damon, 1996, Geology and mineral resources of the Stuyahok area, part of Holy Cross A-4 and A-5 quadrangles, Alaska: U.S. Geological Survey Open-File Report 96-505-A, 30 p., 1 sheet, scale 1:63,360.
|Reporters||Miller, M.L.; Keith, W.J.|
|Last report date||8/29/1996|