The Unnamed (Tatonduk River) is a iron 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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Unnamed (Tatonduk River) MRDS details
Site Name
Primary: Unnamed (Tatonduk River)
Commodity
Primary: Iron
Location
State: Alaska
District: Black
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Basalt
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cambrian
Analytical Data
Not available
Materials
Ore: Hematite
Comments
Comment (Exploration): Status = Probably inactive
Comment (Reference): Primary Reference = Kimball, 1969
Comment (Workings): Workings / Exploration = The Tatonduk River prospect has been known since at least 1933 and was assayed and sampled in 1969 (Kimball, 1969).
Comment (Geology): Age = Precambrian.
Comment (Geology): Geologic Description = This occurrence is a redbed unit of the Precambrian Tindir Group (Kimball, 1969). The Tindir Group is about 2,200 to 2,600 feet thick and in addition to the redbed unit includes argillite, shale, slate, conglomerate, extrusive volcanic rocks, and dolomitic rocks. The beds are in a monoclinal sequence that dips irregularly as much as 30 degrees west and is cut by at least one low-angle thrust fault (Mertie, 1933). Much of the cement in the redbed unit is hematite, and some beds are nearly entirely hematite (Mertie, 1933). The material is not suitable for magnetic or simple gravity separation (Kimball, 1969).? the outcrop area of the redbed unit is more than 6 square miles, and nearly 800 feet of stratigraphic thickness was sampled in 1969 (Kimball, 1969). Sample chips assayed 4.73 to 24.7 percent soluble iron. A 133-foot-thick section assayed 10 to 20 percent soluble iron, and a 200-foot-thick section assayed 21.85 percent soluble iron. These were the highest assays for the thickest sections of material.
Comment (Deposit): Other Comments = This site is within the Yukon-Charley Rivers National Preserve.
Comment (Deposit): Model Name = Superior Fe (Cox and Singer, 1986; model 34a).
References
Reference (Deposit): Mertie, J.B., Jr., 1938, Gold placers of the Fortymile, Eagle, and Circle districts, Alaska: U.S. Geological Survey Bulletin 897-C, p. 133-261.
Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Charley River and Coleen quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-632, 45 p.
Reference (Deposit): Kimball, A.L., 1969, Reconnaissance of Tatonduk River red beds: U.S. Bureau of Mines Open-File Report 1-69, 11 p.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Charley River quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-390, 1 sheet, scale 1:250,000.
Reference (Deposit): Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.
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