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Fortymile R., Mosquito Fk. Placer

Past Producer in Alaska, United States with commodities Gold, Silver, REE, Tin, Tungsten, Thorium, Phosphorus-Phosphates
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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. Land status
  11. Ownership information
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10002714
MRDS ID A015159
Record type Site
Current site name Fortymile R., Mosquito Fk. Placer
Related records 10233656

Geographic coordinates

Geographic coordinates: -141.84768, 64.06031 (WGS84)
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Southeast Fairbanks(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Eagle A-2(quadrangle 1:63,360 scale)

Eagle SE(quadrangle 1:100,000 scale)

Eagle(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Fortymile River WSR(Wild and Scenic River)

Wild and Scenic River BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-393, LOC. 54. DEPOSITS ON SOUTH FORK BETWEEN DENNISON FK. AND ALWATER CREEK. THE MOSQUITO FK. AT TIMES HAS BEEN CONSIDERED PART OF THE SOUTH FK. COORDINATES GIVEN ARE FOR CENTRAL POINT. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Silver Secondary
REE Critical Tertiary
Tin Critical Tertiary
Tungsten Critical Tertiary
Thorium Tertiary
Phosphorus-Phosphates Tertiary

Materials information

Materials Type of material
Scheelite Ore
Barite Gangue
Garnet Gangue
Magnetite Gangue
Olivine Gangue
Pyrite Gangue
Sphene Gangue
Tourmaline Gangue
Zircon Gangue
Cassiterite Unknown
Gold Unknown
Monazite Unknown
Silver Unknown
Thorite Unknown

Analytical data

Result FINENESS SAID TO BE .900 AU. SEE REF. 2, P. 181

Nearby scientific data

(1) -141.84768, 64.06031
ListMap

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Year of first production 1905
Year of last production 1937

Mining district

District name Fortymile

Land status

Ownership category State

Ownership information

  • Type Operator
    Owner Alaska Gold Dredging Corp.

Comments on development

  • INTERMITTANT MINING REPORTED 1905-37. DREDGE OPERATED IN 1936-37.

Reference information

Bibliographic references

  • Deposit

    USGS MF-393 (A-2), LOC. 54.

  • Deposit

    USGS BULL. 897-C, P. 173, 180-81

  • Deposit

    USGS CIRC. 335, P. 10-12.

  • Other Database

    BAG-MF-393-54

General comments

Subject category Comment text
Deposit BAR MINING AND DREDGING NEAR ATWATER BAR AND LOST CHICKEN CREEK.
Deposit RIVER GRADIENT UNDER 50 FEET PER MILE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1987 Powers, M.T. (Huber, D.F.) 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.