|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||Penny Creek is a northeast tributary to lower Solomon River. The mouth of Penny Creek is 1.5 miles upstream from Lees Camp. This is locality 101 of Cobb (1972, MF 445; 1978, OF 78-181).|
Geologic descriptionMining on Penny Creek started as early as 1900; some gold was as coarse as an $18 (1 ounce) nugget (Brooks and others, 1901). The lower 8,000 feet of the creek, which is at least locally incised up to 20 feet, has been mined mostly by small scale operations. The elevation of this part of the creek is between 75 and 150 feet. There is some marble bedrock with an overlying clay layer and thin gravels, but most of the creek is underlain by schist (Smith, 1910). The creek crosses a subdued upland about 500 feet in elevation or less that early workers called the Solomon River terrace (Brooks and others, 1901). This topographic feature does not closely follow the Solomon River and may instead be related to Quaternary sea level fluctuations. Bedrock here is part of a lower Paleozoic metasedimentary assemblage (Sainsbury and others, 1972, OFR 511; Till and others, 1986).
|Geologic map unit||(-164.371604287166, 64.6482556501843)|
|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 (75 to 150 feet) of this area indicate that it was affected by Quaternary sea level fluctuations.|
|Workings or exploration||Small-scale mining took place episodically between 1900 and at least 1934. These operations probably included hand, hydraulic and open-cut dozer/sluice methods.|
|Indication of production||Yes; small|
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.
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.
Smith, P.S., 1910, Geology and mineral resources of the Solomon and Casadepaga quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Bulletin 433, 234 p.
|Reporters||Travis L. Hudson (Applied Geology)|
|Last report date||8/19/1999|