|Quadrangle map, 1:250,000-scale||SO|
|Quadrangle map, 1:63,360-scale||C-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Swede Creek (Gulch) is a small, 0.4 mile long drainage that flows south to Norton Sound, 1.7 miles east of Bluff. It is about 0.5 mile east of the center of section 5, T. 11 S., R. 25 W. The location is accurate.|
Geologic descriptionPlacer gold was discovered on Swede Creek between 1900 and 1902 (Collier and others, 1908) but most mining was between 1918 and WW II (Mulligan, 1971). The placer workings were shallow and extended 600 feet upstream from the steep sea cliffs along Norton Sound (Herreid, 1965). The documented gold production from Swede Creek is less than 1,000 ounces but the extent of the workings suggested to Mulligan (1971) that production could have been greater. Bedrock in the area is Paleozoic marble to both sides of a wide band of schist (Herreid, 1965; Mulligan, 1971; Till and others, 1986). Cinnabar was reported in the placer deposits as early as 1922 (Cathcart, 1922) and a lode cinnabar deposit (SO133) was subsequently identified within about a hundred feet of the point that Swede Creek cascades down the almost vertical sea cliffs that are several hundred feet high.
|Geologic map unit||(-163.702780953428, 64.567362947678)|
|Mineral deposit model||Placer gold (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||The placer workings were shallow and extend about 600 feet upstream from the coastal bluff (Herreid, 1965).|
|Indication of production||Yes; small|
|Production notes||The documented gold production from Swede Creek is less than 1,000 ounces but the extent of the workings suggested to Mulligan (1971) that production could have been greater.|
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.
Herreid, G.H., 1965, Geology of the Bluff area, Solomon quadrangle, Seward Peninsula, Alaska: Alaska Division of Geological and Geophysical Surveys Geological Report 10, 21 p., 1 sheet, scale 1:40,000.
Millrock Resources Inc., 2010, Bering Straits Native Corporation Lands: http://www.millrockresources.com/index.php/projects/bering_straits/ (as of Feb 10, 2010).
Mulligan, J.J., 1971, Sampling gold lode deposits, Bluff, Seward Peninsula, Alaska, with a section on petrography by Walter L. Gnagy: U.S. Bureau of Mines Report of Investigations 7555, 40 p.
Stevens, D.L., 2010, Bluff Gold prospect, Seward Peninsula, western Alaska: NI43-101 Technical Report for Millrock Resources Inc., 153 p. (posted on www.sedar.com on February 4, 2010).
|Reporters||Travis L. Hudson (Applied Geology); D.J. Grybeck (Contractor, U.S. Geological Survey)|
|Last report date||4/2/2010|