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: Chisana
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Comments
Comment (Workings): Workings / Exploration = Some of the ground that was mined was frozen. Type of workings: surface
Comment (Deposit): Model Name = Placer, stream
Comment (Deposit): Other Comments = See also: Big Eldorado lode prospect (NB074)
Comment (Geology): Geologic Description = Two placers described in USGS Bull. 622 had dimensions of 600 ft by 12 ft with 6 ft of gravel, and 250 ft by 30 ft with 2 ft of gravel. Gravels up to 10 ft deep reported. Top 2 to 4 ft of diorite bedrock was also mined. This placer is unique to the district in that it is probably a primary concentration of placer gold. All other placers in the district are derived from reworked Tertiary gravels.
Comment (Exploration): Status = Active
References
Reference (Deposit): Smith, P.S., 1941, Mineral industry of Alaska in 1939: U.S. Geological Survey Bulletin 926-A, p. 1-106.
Reference (Deposit): Brooks, A.H., 1916, Antimony deposits of Alaska: U.S. Geological Survey Bulletin 649, 67 p.
Reference (Deposit): Brooks, A.H., 1915, Mineral resources of Alaska in 1914: U.S. Geological Survey Bulletin 622, 238 p.
Reference (Deposit): Richter, D.H., and Jones, D.L., 1973, Reconnaissance geologic map of the Nabesna A-2 quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-749, scale 1:63,360.
Reference (Deposit): Moffit, F.H., 1954, Geology of the eastern part of the Alaska Range and adjacent area: U.S. Geological Survey Bulletin 989-D, p. 63-218.
Reference (Deposit): Richter, D.H., Singer, D.A., and Cox, D.P., 1975, Mineral resources map of the Nabesna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-655-K, scale 1:250,000.
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