The Ningyoyak Creek, EXP Prospect is a copper 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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Ningyoyak Creek, EXP Prospect MRDS details
Site Name
Primary: Ningyoyak Creek, EXP Prospect
Commodity
Primary: Copper
Location
State: Alaska
District: Noatak
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
Model Name: Polymetallic replacement
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Phyllite
Role: Host
Age Type: Host Rock
Age Young: Late Devonian
Name: Phyllite
Role: Host
Age Type: Host Rock Unit
Age Young: Late Devonian
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Malachite
Gangue: Calcite
Gangue: Quartz
Comments
Comment (Reference): Primary Reference = Mayfield and Grybeck, 1978
Comment (Workings): Workings / Exploration = Surface workings including trenching. Two rock samples reported by Degenhart and others (1978, p. 381-382), to assay 0.14% and 0.44% Cu respectively.
Comment (Deposit): Model Name = Polymetallic vein (Schmidt and Werdon, 1993)
Comment (Geology): Geologic Description = Malachite and chalcopyrite in quartz-carbonate stringers (veins). Deposit crops out within an area 100 ft. by 75 ft. (30 m by 15 m), and is known depth to a depth of 10 ft (3 m)( Degenhart and others, 1978, p. 373-377).
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Degenhart, C.E., Griffis, R.J., McQuat, J.F., and Bigelow, C.G., 1978, Mineral studies of the western Brooks Range performed under contract to the U.S. Bureau of Mines, Contract #JO155089: U.S. Bureau of Mines Open-File Report 103-78, 529 p., 11 sheets.
Reference (Deposit): Mayfield, C.F. and Grybeck, D., 1978, Mineral occurrences and resource map of the Ambler river quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-120I, 1 sheet, scale 1:250,000.
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