The Unnamed (near tributary of Cheeneetnuk River) is a zinc 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 (near tributary of Cheeneetnuk River) MRDS details
Site Name
Primary: Unnamed (near tributary of Cheeneetnuk River)
Commodity
Primary: Zinc
Secondary: Nickel
Location
State: Alaska
District: McGrath
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: Polymetallic replacement
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Workings): Workings / Exploration = W.G. Gilbert found the mineralized zone during geologic mapping for the Alaska Division of Geological and Geophysical Surveys in 1979 (Gilbert, 1981). One sample from the gossan contained 2,900 ppm zinc and 180 ppm nickel.
Comment (Reference): Primary Reference = Gilbert, 1981
Comment (Geology): Geologic Description = This unnamed occurrence is a gossan zone in silty limestone correlative with the Mid-Silurian, Terra Cotta Mountains Sandstone, a unit of the Dillinger subterrane (Bundtzen, Harris, and Gilbert, 1997). No surface dimensions of the mineralized zone are available. One grab sample taken from the gossan contained 2,900 ppm zinc and 180 ppm nickel (Gilbert, 1981).
Comment (Geology): Ore Material = Iron oxides
Comment (Deposit): Model Name = Polymetallic replacement (?) (Cox and Singer, 1986; model 19a).
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Gilbert, W.G., 1981, Preliminary geologic map of the Cheeneetnuk River area, Alaska: Alaska Division of Geological and Geophysical Surveys Open-File Report 153, 19 pages, 2 sheets, 1:63,360 scale.
Reference (Deposit): Bundtzen, T.K., Harris, E.E., and Gilbert, W.G., 1997, Geologic Map of the eastern McGrath quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 97-14, 34 pages, one sheet, scale 1:125,000.
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