Casca Basin

The Casca Basin is a uranium 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

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Casca Basin

Commodity

Primary: Uranium

Location

State: Alaska
District: Black

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: Sandstone U

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Pyrite

Comments

Comment (Deposit): Other Comments = the Casca Basin area lies on Doyon, Limited selected or conveyed land. For more information, contact Doyon, Limited.

Comment (Deposit): Model Name = Roll-front uranium? (Cox and Singer, 1986; model 30c).

Comment (Geology): Age = the mineralization is Paleocene or younger, based on the age of the host rocks.

Comment (Reference): Primary Reference = Northstar Exploration, Inc., 1999

Comment (Workings): Workings / Exploration = The Casca Basin area has been explored by surface methods, including soil and silt sampling, since the mid-1970s (Northstar Exploration, Inc., 1999).

Comment (Exploration): Status = Active

Comment (Geology): Geologic Description = The bedrock near the Casca Basin prospects consists of Paleocene coal-bearing continental clastic sedimentary rocks that lie east of the Proterozoic to Precambrian Tindir Group (Northstar Exploration, Inc., 1999). Pyrite is common in clay partings and coal seams. The sedimentary section locally has above-background radiation levels, suggesting the presence of uranium or other radioactive elements. The section has tuffaceous partings, and minerals within the tuff may be the source of any such uranium. If so, this is probably a sandstone uranium or roll-front deposit (Northstar Exploration, Inc., 1999).

References

Reference (Deposit): Northstar Exploration, Inc., 1999, 1998 Annual Report Kandik, Block 7: Fairbanks, Alaska. (Report held by Doyon, Limited, Fairbanks, Alaska.)

Reference (Deposit): Dover, J.A., and Miyaoka, R.T., 1988, Reinterpreted geologic map and fossil data, Charley River quadrangle, east-central Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2004, 2 sheets, scale 1:250,000.

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