The Unnamed (headwaters of theYuki River) is a copper 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 (headwaters of theYuki River) MRDS details
Site Name
Primary: Unnamed (headwaters of theYuki River)
Commodity
Primary: Copper
Primary: Zinc
Secondary: Silver
Secondary: Molybdenum
Location
State: Alaska
District: Kaiyuh
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
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Conspicuous iron-oxide alteration.
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Reference): Primary Reference = Flanigan, 1998
Comment (Workings): Workings / Exploration = This occurrence was discovered by Anaconda Minerals Company in 1980 (Flanigan, 1998).
Comment (Deposit): Model Name = Plutonic-related Cu-Zn
Comment (Exploration): Status = Probably inactive
Comment (Geology): Age = Flanigan (1998) suggests that the molybdenum content of this occurrence may link it to the Round Top quartz monzonite intrusive complex (NL011), which has been dated at about 75 Ma.
Comment (Geology): Geologic Description = This occurrence is a conspicuous ferricrete deposit 700 meters long and 2 to 5 meters thick along the Yuki River (Flanigan, 1998). The gossan is composed of rounded cobbles and pebbles of quartz-graphite schist, chlorite schist, quartzite, and greenstone in a limonite and manganese oxide matrix. The ferricrete rests unconformably on moderately to steeply dipping muscovite-quartz schist. Twenty-five rock samples contain values up to 180 ppm copper, 208 ppm zinc, 0.9 ppm silver, and 20 ppm molybdenum (Flanigan, 1998). See also NL002, 008, 009, and 011.
References
Reference (Deposit): Flanigan, B., 1998, Genesis and mineralization of ore deposits in the Illinois Creek region, West Central Alaska: University of Alaska, Fairbanks, M.Sc. thesis, 125 p., 2 plates.
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