|Quadrangle map, 1:250,000-scale||SO|
|Quadrangle map, 1:63,360-scale||D-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Goldbottom Creek is a north tributary to the Niukluk River. The mouth of Goldbottom Creek is across the river from Camp Creek (SO057) and about 6 miles upstream from the mouth of Ophir Creek (SO053). Mining may have taken place at several locations along Goldbottom Creek. The location used here is 1.6 miles upstream from the mouth at the confluence with Warm Creek (SO054), an east tributary. The elevation at this location is about 175 feet. This is locality 116 of Cobb (1972, MF 445; 1978, OF 78-181).|
Geologic descriptionPlacer mining started early and about 485 ounces of gold (about $10,000 worth) were produced in 1900 (Brooks and others, 1901). Small dredges operated from 1909 to at least 1911. A heavy-mineral concentrate from near the mouth of Warm Creek (SO054) contained gold, hematite, ilmenite, garnet, and scheelite. Gravels were 5 to 6 feet thick and the gold, recovered from the lower 2 feet of gravel and 1 foot of bedrock, was coarse, well-rounded and mostly bright (Collier and ohters, 1908). Bedrock schist, marble, and some greenstone contains numerous pyrite-bearing quartz veins and lenses. Most of the drainage is probably underlain by a lower Paleozoic metasedimentary assemblage (Till and others, 1986).
|Geologic map unit||(-163.915622315745, 64.955268718497)|
|Mineral deposit model||Placer Au-PGE (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Placer mining started early and about 485 ounces of gold (about $10,000 worth) were produced in 1900 (Brooks and others, 1901). Small dredges operated from 1909 to at least 1911.|
|Indication of production||Yes; small|
|Production notes||About 485 ounces of gold ($10,000) were produced in 1900 (Brooks and others, 1901).|
Brooks, A.H., Richardson, G.B., Collier, A.J., and W.C. Mendenhall, 1901, A reconnaissance in the Cape Nome and adjacent gold fields of Seward Peninsula, Alaska, in 1900: U.S. Geological Survey Special Publication, p. 1-185, maps.
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.
Collier, A.J., Hess, F.L., Smith, P.S., and Brooks, A.H., 1908, The gold placers of parts of Seward Peninsula, Alaska, including the Nome, Council, Kougarok, Port Clarence, and Goodhope precincts: U.S. Geological Survey Bulletin 328, 343 p.
|Reporters||Travis L. Hudson (Applied Geology)|
|Last report date||8/19/1999|