The Unnamed (east of upper Illinois Creek) is a zinc and lead 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 (east of upper Illinois Creek) MRDS details
Site Name
Primary: Unnamed (east of upper Illinois Creek)
Commodity
Primary: Zinc
Primary: Lead
Secondary: Copper
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
Model Name: Polymetallic veins
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Oxidation of copper mineral.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Malachite
Ore: Hemimorphite
Ore: Galena
Gangue: Quartz
Comments
Comment (Reference): Primary Reference = Flanigan, 1998
Comment (Workings): Workings / Exploration = This occurrence was discovered by Anaconda Minerals Company in 1980 (Flanigan, 1998). The vein was exposed by bulldozer work on the Illinois Creek airstrip.
Comment (Geology): Geologic Description = This occurrence is a 1-meter-thick quartz vein that trends northeast across the northern end of the Illinois Creek mine airstrip. The vein cuts silty gray limestone and contains blebs and pockets of crystalline galena and possibly hemimorphite, locally accompanied by malachite staining. Soil sampling shows anomalous lead values coincident with the trend of vein float. A vein sample contained 0.3-1.0% lead, 1.0-3.0% zinc, and 30-100 ppm copper (Flanigan, 1998).
Comment (Geology): Age = Flanigan (1998) interprets this occurrence to be related to magmatic fluids from the Khotol pluton, based on its proximity to the pluton and its low molybdenum content . K-Ar and Ar/Ar dates for the Khotol pluton are approximately 110 Ma (Flanigan, 1998).
Comment (Deposit): Model Name = Pb-Zn vein (Cox and Singer, 1986; model 22c?)
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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