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  3. Mineral Resource Data System (MRDS)

Lost River Valley Be Deposits

Occurrence in Alaska, United States with commodities Beryllium, Fluorine-Fluorite
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10003201
MRDS ID A016007
Record type Site
Current site name Lost River Valley Be Deposits
Alternate or previous names Grothe-Pearson Prospect, Tozer Prospect

Geographic coordinates

Geographic coordinates: -167.17257, 65.45121 (WGS84)

Site location context

Political divisions (FIPS codes)

Nome(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Teller B-5(quadrangle 1:63,360 scale)

Teller SE(quadrangle 1:100,000 scale)

Teller(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Imuruk Basin(hydrologic unit)

Norton Sound(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • TRENCHES ON GROTHE-PEARSON PROPERTY, USGS BULLETIN 1287, PLATE 5. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Beryllium Critical Primary
Fluorine-Fluorite Critical Primary

Materials information

Materials Type of material
Chrysoberyl Ore
Tourmaline Gangue
Fluorite Unknown

Analytical data

Result BULK SAMPLES CONTAINED 0.15-0.25% BE AND 23.0-27.1% F, USGS CIRCULAR 479, P. 8, TABLE 5, SAMPLES 2-4.

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Port Clarence Limestone;Port Clarence Limestone;Port Clarence Limestone
    Rock description Port Clarence Limestone;Port Clarence Limestone;Port Clarence Limestone

Nearby scientific data

(1) -167.17257, 65.45121
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Rapid River Thrust Fault

Controls for ore emplacement

  • Fracture Control

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Small
Significant No
Discovery year 1962
Discoverer C.L. Sainsbury And Thomas E. Smith

Comments on the workings information

  • EXPLORED BY TRENCHES AND DRILLING

Comments on development

  • CLAIMS STAKED: 1962, 1964.

Reference information

Bibliographic references

  • Deposit

    USGS CIRCULAR 479, P. 3, 8-9.

  • Deposit

    USGS BULLETIN 1287, P. 78-79, PLATE 5.

  • Other Database

    BAG-MF-426-7

General comments

Subject category Comment text
Deposit ENECHELON REPLACEMENT VEINS IN EAST TRENDING BELT ABOUT 1000 FT BY 4200 FT (TRACED TO BESSIE-MAPLE PROSPECT); VEINS OF FLUORITE-DIASPORE-TOURMALINE-WHITE MICA-CHRYSOBERYL OCCUR IN FRACTURES AND ALONG MARGINS OF MAFIC DIKES; LATE VEINLETS OF DIASPORE ARE BE-RICH.
Deposit SEE ALSO: BESSIE-MAPLE ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1987 Leonard, Kenneth R. (Huber, Donald F.) U.S. Geological Survey
Editor 20-SEP-1994 Mosier, Dan U.S. Geological Survey PARSED OUT HOST ROCK AND ASSOCIATED ROCK TYPES, AGES, UNIT NAMES, AND UNIT AGES.

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.