|Quadrangle map, 1:250,000-scale||SO|
|Quadrangle map, 1:63,360-scale||D-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Birch Creek is a major southwest tributary of Big Four Creek, a large south tributary to the Casadepaga River. The mouth of Birch Creek is about 5 miles upstream of the confluence of Big Four Creek and the Casadepaga River. Mining on Birch Creek took place about 1.2 miles upstream of its mouth at about 350 feet elevation. This is locality 82 of Cobb (1972, MF 445; 1978, OF 78-181).|
Geologic descriptionVery little is known about mining here other than some took place in 1906 below Shea Creek, a small south tributary (Collier and others, 1908). Bedrock in this part of the drainage is a metavolcanic assemblage thought to be Ordovician in age (Till and others, 1986).
|Geologic map unit||(-164.131614933431, 64.8302614947061)|
|Mineral deposit model||Placer Au-PGE (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Some small-scale surface workings may be present.|
|Indication of production||Yes; small|
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|