The Uranium 2 (in Selawik Hills) is a uranium and thorium 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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Uranium 2 (in Selawik Hills) MRDS details
Site Name
Primary: Uranium 2 (in Selawik Hills)
Commodity
Primary: Uranium
Primary: Thorium
Location
State: Alaska
District: Selawik
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: Clay, chlorite, epidote, and carbonate alteration.
Rocks
Name: Hornblendite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Gangue: Fluorite
Comments
Comment (Workings): Workings / Exploration = Shallow prospect pits and a core drill hole, probably dating from the 1950's, were found in the vicinity of the prospect (Barker, 1985). Samples and preliminary mapping was done by U.S. Bureau of Mines in early 1980's.
Comment (Commodity): Ore Material = Radioactive minerals
Comment (Deposit): Model Name = Disseminated radioactive minerals in syenite.
Comment (Reference): Primary Reference = Barker, 1985
Comment (Geology): Geologic Description = The country rock in the area of this prospect is the mid-Cretaceous Selawik Hills alkaline intrusive complex. The prospect is one of several areas of anomalous radioactivity within the complex. Barker (1985) describes the following features at this site. In anomalous area 1, radioactive altered zones occur in medium-grained biotite-hornblende syenite. At location D, a north-trending ridge of hornblende syenite hosts zones of clay, chlorite, epidote and carbonate alteration. Fluorite is common as discrete grains and as fracture fillings. At sample site 25R, a rubble zone yielded radiometric levels of about 3 times background and contained 770 ppm U3O8 and 4,957 ppm Th. An unidentified red, waxy mineral accounted for 5% to 10% of the rock.
Comment (Geology): Age = Cretaceous.
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Grybeck, D.J., 1977, Known mineral deposits of the Brooks Range, Alaska: US Geological Survey Open-File Report 77-166C, 41 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): Barker, J.C., 1985, Sampling and analytical results of a mineral reconnaissance in the Selawik Hills area, northwestern Alaska: U.S. Bureau of Mines Open-File Report 43-85, 67 p.
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