|Quadrangle map, 1:250,000-scale||SO|
|Quadrangle map, 1:63,360-scale||C-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The part of Solomon River included here has been continuously placer mined from an elevation of about 100 feet upstream to an elevation of about 175 feet. It extends for a distance of about 5 miles starting 0.7 miles downstream from Quigleys Camp and continuing upstream to the mouth of Winston Creek, 1 mile above East Fork. This part of the Solomon River was included in localities 99 and 101 of Cobb (1972, MF 445; 1978, OF 78-181).|
Geologic descriptionThe active drainage of the Solomon River has been continuously placer mined mined, mostly by dredging, from an elevation of about 100 feet upstream to an elevation of about 175 feet. This is a distance of about 5 miles starting 0.7 miles downstream from Quigleys Camp and continuing upstream to the mouth of Winston Creek, 1 mile above East Fork. Also see SO015 (lower Solomon River ). Bedrock here is part of a lower Paleozoic metasedimentary assemblage (Sainsbury and others, 1972, OFR 511; Till and others, 1986).
|Geologic map unit||(-164.299606566761, 64.6782575193159)|
|Mineral deposit model||Placer Au-PGE (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary; the location and elevation (100 to 170 feet) of this area indicate that it was affected by Quaternary sea level fluctuations.|
|Workings or exploration||About 5 miles of dredge and open-cut placer workings are present along this part of the Solomon River, primarily along the active drainage.|
|Indication of production||Yes; small|
|Production notes||Placer gold was discovered in 1899 and mining started in 1900 when about $10,000 (or 485 fine ounces) were produced (Brooks and others, 1901). Lu and others (1968) compiled reported production and determined that more than about $2,500,000 dollars, or 125,000 ounces at $20 per ounce, had been produced from the general Solomon River area. This is a minimum estimate of production.|
|MRDS Number||A010713; D002601|
Cobb, E.H., 1972, Metallic mineral resources map of the Solomon quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-445, 1 sheet, scale 1:250,000.
Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Solomon quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-181, 185 p.
Lu, F.C.J., Heiner, L.E., and Harris, D.P., 1968, Known and potential ore reserves, Seward Peninsula, Alaska: University of Alaska, Mineral Industry Research Laboratory Report 18, 107 p.
Sainsbury, C.L., Hudson, T.L., Ewing, R., and Marsh, W.R., 1972, Reconnaissance geologic maps of the Solomon D-5 and C-5 quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 72-324, 12 p., 2 sheets, scale 1:63,360.
|Reporters||Travis L. Hudson (Applied Geology)|
|Last report date||8/19/1999|