|Quadrangle map, 1:250,000-scale||GO|
|Quadrangle map, 1:63,360-scale||C-7|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Snow Gulch is a small north tributary to Arolik River (GO036). The mouth of Snow Gulch is 2 miles upstream of the mouth of Faro Creek. Placer mining has taken place along the lower mile of Snow Gulch. The map site is at the approximate midpoint of the placer workings, in the N1/2 of section 30, T 7 S, R 71 W, of the Seward Meridian. It is locality 8 of Hoare and Cobb (1977) and of Cobb and Condon (1972).|
Geologic descriptionPlacer gold mining occurred on Snow Gulch in 1913 or earlier and in 1938 to 1940 (Harrington, 1921; Hoare and Cobb, 1977); it may also have occurred at other times between 1913 and 1940. Open-cut placer tailings are present along about one mile of the creek upstream from its mouth. Information about the deposit is not available, other than that some platinum was recovered along with the gold. The creek was prospected for platinum in the 1960s by the Goodnews Bay Mining Company. A sample of platinum from Snow Gulch contained 76.32 percent Pt, 8.34 percent Ir, 8.34 percent Os, 5.05 percent Ru, 1.26 percent Rh, and 0.69 percent Pd (Mertie, 1969, table 38). Snow Gulch flows along a large, vertical, notheast-trending fault in Precambrian crystalline rocks (Hoare and Coonrad, 1978).
|Geologic map unit||(-161.422243291701, 59.5492315029531)|
|Mineral deposit model||Placer Au-PGE (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Open-cut placer tailings are present along about one mile of Snow Creek upstream from its mouth. The creek was prospected for platinum in the 1960s by the Goodnews Bay Mining Company (Merite, 1969).|
|Indication of production||Yes; small|
|Production notes||The small amout of platinum recovered from Snow Gulch was included with the production reported by the Goodnews Bay Mining Company from the Salmon River area in the Hagemeister Island quadrangle (Mertie, 1969, pg. 89).|
Cobb, E.H., and Condon, W.H., 1972, Metallic mineral resources map of the Goodnews quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-447, scale 1:250,000.
Harrington, G.L., 1921, Mineral resources of the Goodnews Bay region: U.S. Geological Survey Bulletin 714-E, p. 207-228.
Hoare, J.M., and Cobb, E.H., 1977, Mineral occurrences (other than mineral fuels and construction materials) in the Bethel, Goodnews, and Russian Mission quadrangles, Alaska: U.S. Geological Survey Open-File Report 77-156, 98 p.
Hoare, J.M., and Coonrad, W.L., 1978, Geologic map of the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska: U.S. Geological Survey Open-File Report 78-9-B, 2 sheets, scale 1:250,000.
|Reporters||Travis L. Hudson|
|Last report date||3/20/2001|