The Ikuk is a copper, gold, and silver 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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Ikuk MRDS details
Site Name
Primary: Ikuk
Commodity
Primary: Copper
Primary: Gold
Primary: Silver
Location
State: Alaska
District: Goodnews Bay
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
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: Silicification, chloritization, and biotite replacement (?).
Rocks
Role: Host
Age Type: Host Rock
Age Young: Eocene
Age Old: Jurassic
Analytical Data
Not available
Materials
Ore: Pyrrhotite
Ore: Pyrite
Ore: Chalcopyrite
Ore: Arsenopyrite
Gangue: Biotite
Gangue: Quartz
Gangue: Chlorite
Comments
Comment (Workings): Workings / Exploration = Reconnaissance surface observations and sampling have been completed in the prospect area.
Comment (Geology): Age = Not known. The age of the host intrusive rock is probably Jurassic or Late Cretaceous/Early Tertiary, the age of other intrusive rocks in the region (Hoare and Coonrad, 1978).
Comment (Reference): Primary Reference = Fechner, 1988
Comment (Geology): Geologic Description = A composite mafic to felsic pluton intrudes Paleozoic to Mesozoic sedimentary and volcanic rocks in this area (Hoare and Coonrad, 1978). Surface observations completed for Calista Corporation (unpublished data), identified peridotite, diorite, granodiorite, and quartz monzonite in the intrusive complex. A variably silicified, choritized, and biotite-altered, 800-foot-wide fractured zone in diorite contains chalcopyrite, arsenopyrite, pyrrhotite, and pyrite (Fechner, 1988, 61). Rock samples from the prospect contain up to 2.4 percent Cu, 25.2 ppm Ag, 0.16 ounce of gold per ton, and 0.99 percent As.
Comment (Deposit): Model Name = Sulfide-bearing shear zone in diorite
References
Reference (Deposit): Kilburn, J.E., Goldfarb, R.J., Griscom, Andrew, and Box, S E., 1993, Map showing metallic mineral resource potential in the Goodnews Bay, Hagemeister Island, and Nushagak Bay quadrangles, southwest Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2228, 4 sheets, scale 1:250,000.
Reference (Deposit): Hoare, J.M., and Coonrad, W.L., 1978, Geologic map of the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska: U.S. Geological Survey Open-File Report 78-9-B, two sheets, scale 1:250,000.
Reference (Deposit): Fechner, S.A., 1988, Bureau of Mines mineral investigation of the Goodnews Bay mining district, Alaska: U.S. Bureau of Mines Open-File Report 1-88, 230 p.
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