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Brown Bear

Prospect in Alaska, United States with commodities Silver, Gold, Lead, Zinc
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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 10003443
MRDS ID A106200
Record type Site
Current site name Brown Bear
Alternate or previous names Norris Lead-Zinc Inc.

Geographic coordinates

Geographic coordinates: -147.37258, 61.08958 (WGS84)
Relative position On slope south of Miners River, 2,500 ft northwest of Peak 1,290. Accurate within 2,600 ft. Locality A-12 of Jansons and others (1984).

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Anchorage A-1(quadrangle 1:63,360 scale)

Anchorage SE(quadrangle 1:100,000 scale)

Anchorage(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Eastern Prince William Sound(hydrologic unit)

Prince William Sound(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Chugach National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Primary
Zinc Critical Primary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Sphalerite Ore
Calcite Gangue
Quartz Gangue

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

(1) Qs
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Jansons and others (1984) reported two mineralized quartz veins in sandstone, siltstone, and mudstone of the Tertiary Orca Group. The veins are from a few inches to 18 inches wide and contain galena, sphalerite, pyrite, and calcite. Two grab samples contain from 4.45 to 17.78 percent Pb, 12.29 to 28.88 percent Zn, 3.6 to 28.8 oz/ton Ag, and 0.08 to 0.19 oz /ton Au (Pilgrim, 1930).
  • Age = Paleocene or younger; veins cut sandstone, siltstone, and mudstone of the Tertiary Orca Group.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Prince William Sound

Comments on the reserve resource information

  • Reserves = Inferred reserves are 400 tons at 2.5 percent Zn, 0.8 percent Pb, and 8.5 ppm Ag (Dahners, 1947).

Comments on the workings information

  • Workings / Exploration = A 6 ft long adit is the extent of the development. Pilgrim (1930) reported two grab samples contained from 4.45 to 17.78 percent Pb, 12.29 to 28.88 percent Zn, 3.6 to 28.8 oz/ton Ag, and 0.08 to 0.19 oz /ton Au.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Jansons and others, 1984

General comments

Subject category Comment text
Deposit Model Name = Polymetallic veins ? (Cox and Singer, 1986; model 22c ? )

Reporter information

Type Date Name Affiliation Comment
Reporter 30-JUL-1998 D.P. Bickerstaff U.S. Geological Survey
Reporter 30-JUL-1998 S.W. Huss U.S. Geological Survey

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.