The Unnamed (overlooking tributary of Cheeneetnuk River) is a lead and 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 (overlooking tributary of Cheeneetnuk River) MRDS details
Site Name
Primary: Unnamed (overlooking tributary of Cheeneetnuk River)
Commodity
Primary: Lead
Primary: Zinc
Secondary: Copper
Secondary: Silver
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 (Reference): Primary Reference = Gilbert, 1981
Comment (Deposit): Model Name = Polymetallic replacement (?) (Cox and Singer, 1986; model 19a)
Comment (Geology): Geologic Description = This unnamed occurrence is a ferricrete gossan hosted in an unnamed Ordovician mudstone unit of the Nixon Fork subterrane (Gilbert, 1981; Wilson and others, 1998). The gossan is parallel to bedding in the unit; no surface measurements are available. Two grab samples taken in the gossan zone contained up to 3.0 grams/tonne silver, 81 ppm copper, 320 ppm lead, and 6,800 ppm zinc (Gilbert, 1981).
Comment (Geology): Ore Material = Iron oxides
Comment (Workings): Workings / Exploration = W.G. Gilbert found the occurrence during geological mapping for the Alaska Division of Geological and Geophysical Surveys in 1979 (Gilbert, 1981). Two grab samples taken across the gossan zone contained up to 3.0 grams/tonne silver, 81 ppm copper, 320 ppm lead, and 6,800 ppm zinc (Gilbert, 1981).
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Wilson, F.H., Dover, J.H., Bradley, D.C., Weber, F.R., Bundtzen, T.K., and Haeussler, P.J., 1998, Geologic map of central (interior) Alaska: U.S. Geological Survey Open-File Report 98-133, 17 p., 2 sheetsm, scale 1:500,000.
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.
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