The Crooked Creek is a gold mine located in Alaska.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
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Crooked Creek MRDS details
Site Name
Primary: Crooked Creek
Commodity
Primary: Gold
Location
State: Alaska
District: Council
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Placer Au-PGE
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Gangue: Garnet
Gangue: Magnetite
Gangue: Topaz
Comments
Comment (Workings): Workings / Exploration = Surface open-cut placer workings and dredging have taken place along this part of Crooked Creek.
Comment (Geology): Geologic Description = Stream gravels of Crooked Creek merge with floodplain deposits of Ophir Creek where the paystreak was 250 feet wide, 6 feet thick, and contained 0.22 ounces Au per cubic yard (Collier and others, 1908; Smith and Eakin, 1911). The paystreak narrowed to 6 feet wide 0.25 mile upstream of the mouth. About three quarters of a mile above the mouth of Crooked Creek, the paystreak consisted of 5 feet of auriferous sandy clay mixed with limestone (marble) fragments; it was 20 feet wide and overlain by 6 feet of barren clay. At 1.25 miles above the mouth, the paystreak widened to 150 to 200 feet and consisted of auriferous yellow clay mixed with limestone (marble) boulders. Much of the mining in the two decades before WW II, including dredging (Cobb, 1975, OFR 75-429), probably took place here. Bedrock in the area is metasedimentary schist and marble of a Lower Paleozoic assemblage (Till and others, 1986).
Comment (Exploration): Status = Inactive
Comment (Commodity): Gangue = topaz (from placer concentrate near mouth of the creek
Comment (Production): Production Notes = Placer gold from lower Crooked Creek was both coarse and rounded as well as sharp and angular with quartz attached (Smith and Eakin, 1911). Collier and others (1908) also noted fragile and crystalline placer gold that suggests a local source.
Comment (Reference): Primary Reference = Smith and Eakin, 1911
Comment (Deposit): Model Name = Placer Au-PGE (Cox and Singer, 1986; model 39a)
Comment (Geology): Age = Quaternary; two or more cycles of placer development have occured in the area.
References
Reference (Deposit): Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bendeleben quadrangle, Alaska: U.S. Geological Survey Open-File Report 75-429, 123 p.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Bendeleben quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-417, 1 sheet, scale 1:250,000.
Reference (Deposit): Smith, P.S. and Eakin, H.M., 1911, Mineral resources of Alaska 1910: U.S. Geological Survey Bulletin 480, 333 p..
Reference (Deposit): Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.
Reference (Deposit): 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.
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