Uranium 2 (in Selawik Hills)

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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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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