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  3. Mineral Resource Data System (MRDS)

Casca Basin

Prospect in Alaska, United States with commodity Uranium
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10307415
Record type Site
Current site name Casca Basin

Geographic coordinates

Geographic coordinates: -141.24779, 65.3828 (WGS84)
Relative position The Casca Basin covers an area of about 36 square miles. The coordinates for the prospects are placed in the approximate center, at the intersection of T. 6 N., and T.7 N., of the Fairbanks Meridian, and R. 31 E. and R. 23 E., of the Fairbanks Meridian. The location is accurate. The Casca Basin area lies on Doyon, Ltd. selected or conveyed land.

Site location context

Political divisions (FIPS codes)

Southeast Fairbanks(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Charley River B-1(quadrangle 1:63,360 scale)

Charley River SE(quadrangle 1:100,000 scale)

Charley River(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Doyon, Limited(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Uranium Primary

Materials information

Materials Type of material
Pyrite Ore

Mineral occurrence model information

Model code 204
USGS model code 30c
Deposit model name Sandstone U

Nearby scientific data

(1) -141.24779, 65.3828
ListMap

Economic information

Comments on the geologic information

  • 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).
  • Age = the mineralization is Paleocene or younger, based on the age of the host rocks.

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Active

Mining district

District name Black

Comments on the workings information

  • 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).

Reference information

Bibliographic references

  • 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.

  • Deposit

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

Comments on the references

  • Primary Reference = Northstar Exploration, Inc., 1999

General comments

Subject category Comment text
Deposit Model Name = Roll-front uranium? (Cox and Singer, 1986; model 30c).
Deposit Other Comments = the Casca Basin area lies on Doyon, Limited selected or conveyed land. For more information, contact Doyon, Limited.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-APR-00 Cameron, C.E. Alaska Division of Geological and Geophysical Surveys

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.