1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Bear claims

Prospect in Alaska, United States with commodity Gold
Map
XML
JSON
KML
C
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  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 10307348
Record type Site
Current site name Bear claims

Geographic coordinates

Geographic coordinates: -145.26694, 65.52473 (WGS84)
Relative position The Bear claims are located along the Steese Highway centered at about BM 2283, just north of Miller Creek and approximately 1 mile west of Miller House.

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
Gold Primary

Materials information

Materials Type of material
Gold Ore

Alteration

  • (Local) Chloritic alteration accompanied by massive to disseminated arsenopyrite and lesser pyrite.

Nearby scientific data

(1) -145.26694, 65.52473
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The following geologic description is taken from Freeman and others (1988, p. 16): Mineralization in the roadcut of the Steese Highway within the Bear claims consists of massive to disseminated arsenopyrite and lesser pyrite. The sulfide minerals are hosted by a sequence of chloritic greenschist overlain by black calcareous, graphitic schist overlain by micaceous quartzite. The sequence is folded into open folds whose axes plunge gently south with wavelengths of approximately 150 feet and amplitudes of approximately 30 feet. The crests of anticlines are cut by stockwork quartz veins stained by abundant scorodite. The rocks are pervasively oxidized along vertical shear zones which strike N 40 E. The shears contain oblong fragments of highly altered granite which are also mineralized with arsenopyrite and pyrite and are heavily stained with scorodite. A sixty-five foot section of one of the most highly mineralized anticlinal structures was channel sampled at five foot intervals. the maximum gold value for these channel samples is 0.092 ounces per ton, but several others have gold values ranging from 0.012 to 0.017 ounces per ton.

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Inactive

Mining district

District name Circle

Comments on the workings information

  • Workings / Exploration = Channel sampled in 1988 (Freeman and others, 1988).

Reference information

Bibliographic references

  • Deposit

    Freeman, C.J., Adams, D.D., Balla, J.C., and Metz, P.A., 1988, Circle joint venture 1988 final report: Fairbanks, Alaska, Fairbanks Exploration Inc. 23 p.

Comments on the references

  • Primary Reference = Freeman and others, 1988.

General comments

Subject category Comment text
Deposit Model Name = Gold-bearing stockwork veins that contain arsenopyrite.

Reporter information

Type Date Name Affiliation Comment
Reporter 14-SEP-98 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.