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
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Casca Basin MRDS details
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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