The Big Eldorado 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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Big Eldorado Creek MRDS details
Site Name
Primary: Big Eldorado Creek
Commodity
Primary: Gold
Location
State: Alaska
District: Fairbanks
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
Comments
Comment (Geology): Age = Quaternary placer.
Comment (Exploration): Status = Inactive
Comment (Reference): Primary Reference = Prindle and Katz, 1913
Comment (Deposit): Model Name = Placer Au (Cox and Singer, 1986; model 39a)
Comment (Geology): Geologic Description = Placer gold is found in a narrow paystreak where depth to bedrock is as much as 98 feet (Prindle, 1908; Prindle and Katz, 1909). In the upper part of the valley, gold is found in gravel 50 feet deep and 30 feet wide (Prindle and Katz, 1913). Production through 1910 was worth $50,000 with an average value of gold at $19.38 per ounce (Prindle and Katz, 1913). Mining was reported in 1915 and 1916 (Brooks, 1916 [B 642]; Smith, 1917 [BMB 153]). Small-scale drift mining was reported in 1925 and 1926 (Wimmler, 1925 [ATDM MR 195-8, p. 46]; Wimmler, 1926 [ATDM MR 195-11, p. 58]). The gold is between 941 and 952 fine (Glover, 1950).
Comment (Production): Production Notes = The creek produced $50,000 through 1910; the average value of the gold was $19.38 per ounce (Prindle and Katz, 1913).
Comment (Workings): Workings / Exploration = Mining began before 1910, and small-scale drift mining was reported in 1925 and 1926 (Wimmler, 1925 [ATDM MR 195-8, p. 46]; Wimmler, 1926 [ATDM MR 195-11, p. 58]).
References
Reference (Deposit): Glover, A.E., 1950, Placer gold fineness: Alaska Territorial Department of Mines Miscellaneous Report 195-1, 38 p.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-410, 1 sheet, scale 1:250,000.
Reference (Deposit): Wimmler, N.L., 1925, Placer mining in Alaska in 1925: Alaska Territorial Department of Mines Miscellaneous Report 195-8, 118 p.
Reference (Deposit): Wimmler, N.L., 1926, Placer mining in Alaska in 1926: Alaska Territorial Department of Mines Miscellaneous Report 195-11, 121 p.
Reference (Deposit): Smith, S.S., 1917, The mining industry in the Territory of Alaska during the calendar year 1916: U.S. Bureau of Mines Bulletin 153, 89 p.
Reference (Deposit): Brooks, A.H., 1916, Antimony deposits of Alaska: U.S. Geological Survey Bulletin 649, 67 p.
Reference (Deposit): Brooks, A.H., 1908, The mining industry in 1907: U.S. Geological Survey Bulletin 345, 294 p.
Reference (Deposit): Smith, P.S., 1917, The mining industry in the territory of Alaska during the calendar year 1916: U.S. Bureau of Mines Bulletin 153, 89 p.
Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Fairbanks quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-662, 174 p.
Reference (Deposit): Prindle, L.M., 1908, The Fairbanks and Rampart quadrangles, Yukon-Tanana region, Alaska, with a section on the Rampart placers, by F.L. Hess, and a paper on the water supply of the Fairbanks region, by C.C. Covert: U.S. Geological Survey Bulletin 337, 102 p.
Reference (Deposit): Prindle, L.M., and Katz, F.J., 1913, Detailed description of the Fairbanks district, in Prindle, L. M., A geologic reconnaissance of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Bulletin 525, p. 59-152.
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