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Dodge Creek

Past Producer in Alaska, United States with commodities Gold, Silver
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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 10002575
MRDS ID A015010
Record type Site
Current site name Dodge Creek
Related records 10258061

Geographic coordinates

Geographic coordinates: -156.5688, 63.13888 (WGS84)
Relative position Dodge Creek is a short, north-flowing tributary of the Innoko River. The junction of Dodge Creek and the Innoko River lies approximately one mile west-northwest of the town of Ophir. The coordinates are at the mine along Dodge Creek marked on the U.S. Geological Survey Ophir A-2 topographic map (1954, minor revisions 1955), in the NW1/4 sec. 22, T. 27 S., R. 12 E., Kateel River Meridian. Dodge Creek is location 12 of Cobb (1972 [MF 367]). The location is accurate within 500 feet.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Ophir SE(quadrangle 1:100,000 scale)

Ophir(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Gold Ore
Ilmenite Ore
Magnetite Ore
Pyrite Ore

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Nearby scientific data

(1) -156.5688, 63.13888
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The bedrock in the vicinity of Dodge Creek consists of sandstone, shale, and siltstone, and several small monzonite intrusive bodies (Chapman and others, 1985).? Gold in Dodge Creek is reportedly deep (Brooks, 1916). Heavy minerals in placer concentrates include magnetite, ilmenite, siderite, pyrite, amphibole, pyroxene, and zircon (Bundtzen and others, 1987). The source of the gold may be bimodal dike swarms, peraluminous rhyolite, and alkali-calcic monzonitic intrusive rocks in the Ophir area (Bundtzen and others, 1987).? Gold was discovered on Dodge Creek in 1915 and mining probably began in 1916 (Brooks, 1916). Mining continued intermittently until possibly as recent as 1962. The estimated production from Dodge Creek is 408 ounces of gold and 40 ounces of silver (Bundtzen and others, 1987). The gold was 911 fine (Metz and Hawkins, 1981).
  • Age = Quaternary. The placer gold is probably derived from Cretaceous or Tertiary intrusive rocks (Bundtzen and others, 1987).

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Probably inactive

Mining district

District name Innoko

Comments on the production information

  • Production Notes = The estimated production from Dodge Creek is 408 ounces of gold and 40 ounces of silver (Bundtzen and others, 1987).

Comments on the workings information

  • Workings / Exploration = Gold was discovered on Dodge Creek in 1915 and mining probably began in 1916 (Brooks, 1916). Mining continued intermittently until possibly as recent as 1962.

Reference information

Bibliographic references

  • Deposit

    Brooks, A.H., 1916, Antimony deposits of Alaska: U.S. Geological Survey Bulletin 649, 67 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Ophir quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-367, 1 sheet, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction material) in the Iditarod and Ophir quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-576, 101 p.

  • Deposit

    Metz, P.A., and Hawkins, D.B., 1981, A summary of gold fineness values from Alaska placer deposits: University of Alaska, Fairbanks, Mineral Industry Research Laboratory Report No. 45, 63 p.

  • Deposit

    Chapman, R.M., Patton, W.W., and Moll, E.J., 1985, Reconnaissance geologic map of the Ophir quadrangle, Alaska: U.S. Geological Survey Open-File Report 85-203, 1 sheet, 1:250,000 scale.

  • Deposit

    Bundtzen, T.K., Green, C.B., Deagen, J., and Daniels, C.L., 1987, Alaska's mineral industry, 1986: Alaska Division of Geological and Geophysical Surveys, Special Report 40, 68 p.

Comments on the references

  • Primary Reference = Bundtzen and others, 1987

General comments

Subject category Comment text
Deposit Model Name = Placer Au (Cox and Singer, 1986; model 39a)

Reporter information

Type Date Name Affiliation Comment
Reporter 07-AUG-01 Cameron, C.E. Northern Associates Inc.

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.