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Tok Antimony

Past Producer in Alaska, United States with commodity Antimony
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10001756
MRDS ID A012543
Record type Site
Current site name Tok Antimony
Alternate or previous names Stibnite, A Lucky Leak, Gamblin, Caulk

Geographic coordinates

Geographic coordinates: -143.80266, 63.2497 (WGS84)
Relative position The deposit is located nearly at the foot of Stibnite Creek (formerly called Boulder Creek), in the SW 1/4 section 13, T. 17 N., R. 8 E., of the Copper River Meridian (Ebbley and Wright, 1948, p. 30). It is location 22 of Singer and others (1976).

Site location context

Political divisions (FIPS codes)

Southeast Fairbanks(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tanacross A-6(quadrangle 1:63,360 scale)

Tanacross SW(quadrangle 1:100,000 scale)

Tanacross(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Antimony Critical Primary

Materials information

Materials Type of material
Pyrite Ore
Stibnite Ore
Calcite Gangue
Muscovite Gangue
Quartz Gangue

Alteration

  • (Local) Andesite Porphyry Is Intensely Altered To Quartz-Dolomite-Sericite

Mineral occurrence model information

Model code 180
USGS model code 27d
Deposit model name Simple Sb (veins, pods, etc)

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -143.80266, 63.2497
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Tok Antimony deposit, also called Boulder Creek, Stibnite, A Lucky Leak, and Stibnite Creek was discovered in the early 1900's. The mineralization at the prospect consists of a six-meter-wide fault zone that contains four types of stibnite ore: (1) coarse-grained, acicular stibnite in crystals up to 50 millimeters long associated with quartz, (2) fine-grained massive stibnite with interstitial quartz and minor pyrite, (3) mineralized breccia consisting of quartz and schist fragments in a matrix of quartz, calcite, muscovite, stibnite and pyrite, and (4) quartz-pyrite-stibnite stringers. The high-grade ore is concentrated along two well-defined fault planes as two distinct veins about 0.6 meter wide, separated by 1 to 2 meters of fractured and altered chlorite schist. Isolated pods of stibnite and pyrite-bearing quartz stringers less than 1 to 2 centimeters wide occur along minor faults within 30 meters of veins (Ebbley and Wright, 1948).? In 1940, several tons of ore from the prospect were stockpiled by Boulder Creek awaiting transport. All of it was washed away by the river and was never processed (Ebbley and Wright, 1948).

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Mining district

District name Tok

Comments on the production information

  • Production Notes = Several tons of high grade ore were stockpiled at the site in 1940, but were washed away by the river before it could be transported (Ebbley and Wright, 1948). There was some mining from an open cut with a bulldozer in 1976 (York, 1980).

Comments on the workings information

  • Workings / Exploration = A 12-foot adit was driven in 1914. In 1940, several tons of material were stockpiled and mined, but were washed away by the river before it could be transported from the deposit (Ebbley and Wright, 1948, p. 31).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Ebbley and Wright, 1948

General comments

Subject category Comment text
Deposit Model Name = Stibnite vein (Cox and Singer, 1986; model 27d)

Reporter information

Type Date Name Affiliation Comment
Reporter 13-APR-99 Cameron, C.E. Alaska Division of Geological and Geophysical Surveys

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.