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Bedrock Creek

Prospect in Alaska, United States with commodities Uranium, Copper, Thorium, Tungsten
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10308806
MRDS ID A012246
Record type Site
Current site name Bedrock Creek
Related records 10001499, 10160377

Geographic coordinates

Geographic coordinates: -145.09894, 65.54974 (WGS84)
Relative position Location of claims is about 100 yards east of Bedrock Creek and 50 yards upstream of the Steese Highway bridge.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Circle C-3(quadrangle 1:63,360 scale)

Circle NE(quadrangle 1:100,000 scale)

Circle C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Uranium Primary
Copper Secondary
Thorium Secondary
Tungsten Critical Secondary

Materials information

Materials Type of material
Malachite Ore
Monazite Ore
Scheelite Ore

Nearby scientific data

(1) -145.09894, 65.54974
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Country rock is dominantly Paleozoic and (or) Precambrian Yukon-Tanana terrane quartz-mica schist containing numerous discontinous quartz veins, intruded by lower Tertiary granite of the Circle pluton. Nelson, West, and Matzko (1954) reported 10% monazite, 5% topaz and a small amount of scheelite in the heavy-mineral fraction of the granite bedrock. Other minerals present are pyrrhotite, garnet, ilmenite, zircon, biotite, topaz and malachite. Two other samples from the area are slightly anomalous in tungsten (2-3 ppm), fluorine (2300-2400 ppm), lead (11-25 ppm), and arsenic (12-24 ppm) (Nelson and others, 1954). Concentrates from gravel on upper Bedrock Creek contain tin and tungsten (Barker, 1979). Fluorometric tests indicated the presence of uranium in several minerals but not in amounts to be of economic interest. A slightly radioactive zone of iron-stained schist 0.5 to 2 feet wide by 8 feet long was staked for uranium. This iron-stained schist gave a radiometric reading of about 0.05 mR/hr while the unstained schist gave a reading of 0.04 mR/hr (Freeman, 1963, p. 32). Work on claims between 1976 and 1978 consisted of surface trenching on the slightly radioactive zone of the iron-stained schist. Bedrock Creek is noted for its absence of gold, even though it is surrounded by gold-producing creeks such as Independence, Mammoth, Crooked and Boulder Creeks (Yeend, 1991, p. 31).

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Circle

Comments on the workings information

  • Workings / Exploration = Claims located 100 yards east of the creek were active in 1976 - 1978. Workings consisted of surface trenching of a slightly radioactive zone of iron-stained schist 0.5 to 2 feet wide by 8 feet long. This iron-stained schist gave a radiometric reading of about 0.05 mR/hr while the unstained schist gave a reading of 0.04 mR/hr (Freeman, 1963, p. 32).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Nelson and others, 1954; Freeman, 1963.

General comments

Subject category Comment text
Deposit Other Comments = Site of localized radioactive anomaly; low grade and small size. Apparently no potential for uranium of economic importance.

Reporter information

Type Date Name Affiliation Comment
Reporter 22-MAY-1998 C.J. Freeman, J.R. Guidetti Schaefer, A.S. Clements Avalon Development Corporation

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.