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  3. Mineral Resource Data System (MRDS)

Granite Creek

Past Producer in Alaska, United States with commodities Gold, Chromium
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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 10002638
MRDS ID A015077
Record type Site
Current site name Granite Creek
Related records 10258136

Geographic coordinates

Geographic coordinates: -157.90182, 62.46329 (WGS84)
Relative position USGS MF-363, Loc. 33. 1.5 miles NE of discovery.; 4 miles east of Flat; Accurate within 1/4 mile.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Iditarod B-4(quadrangle 1:63,360 scale)

Iditarod SW(quadrangle 1:100,000 scale)

Iditarod C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Chromium Critical Secondary

Materials information

Materials Type of material
Gold Ore
Chromite Gangue

Alteration

  • (Local) Gold Iron Stained

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone

Nearby scientific data

(1) -157.90182, 62.46329
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Gravel is 8-12 ft. thick; upper 2 ft. of bedrock also mined for sufficient pay. Chromite reported in concentrates (Cobb, 1973).
  • Age = Tertiary/Quaternary

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Iditarod

Comments on the production information

  • Production Notes = Produced 4,004 oz. Au 1910-56. Mined again in 1980's, post 1956 production estimated at >136 oz. Au

Comments on the workings information

  • Workings / Exploration = Surface: pits

Reference information

Bibliographic references

  • Deposit

    Mertie, J.B., Jr., 1936, Mineral deposits of the Ruby-Kuskokwim region, Alaska: U.S. Geological Survey Bulletin 864-C, 115-245.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Iditarod quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-363, 1 sheet, scale 1:250,000.

  • Deposit

    Swainbank, R.C., Bundtzen, T.K., Clough, A.H., Henning, M.W., and Hansen E.W., 1995, Alaska's mineral industry 1994: Alaska Division of Geological and Geophysical Surveys Special Report 49, 77 p.

  • Deposit

    Miller, M.L., Bundtzen, T.K., Keith, W.J., Bailey, E.A., Bickerstaff, Damon, 1996, Geology and mineral resources of the Stuyahok area, part of Holy Cross A-4 and A-5 quadrangles, Alaska: U.S. Geological Survey Open-File Report 96-505-A, 30 p.

  • Deposit

    Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 pages.

  • 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.

Comments on the references

  • Primary Reference = Mertie, 1936

General comments

Subject category Comment text
Deposit Model Name = Placer: stream, bench
Deposit Other Comments = Stream gradient, 150-200 ft. per mile. Fineness 853 parts Au, 134 parts Ag (Mertie, 1936 p. 221); actively mined 1985-1994

Reporter information

Type Date Name Affiliation Comment
Reporter 25-MAY-1994 Powers, M.T. U.S. Geological Survey
Reporter 25-MAY-1994 Huber, D.F. U.S. Geological Survey
Reporter 25-MAY-1994 Miller, M.L. 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.