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  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Graham Creek

Prospect in Alaska, United States with commodity Gold
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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 10308023
Record type Site
Current site name Graham Creek

Geographic coordinates

Geographic coordinates: -156.13091, 63.60966 (WGS84)
Relative position Graham Creek is a large, north-flowing tributary to Colorado Creek. The headwater tributaries to Graham Creek include Bear Creek (OP003) and Cripple Creek (OP005). Mining occurred along both Bear and Cripple creeks, and an additional mine is marked on the current topographic map along the north side of Cripple Creek just south of the junction of Cripple Creek and Graham Creek. The exact location of prospecting along Graham Creek is not known; the coordinates are arbitrarily chosen at the approximate midpoint of Graham Creek. This location is accurate within 3 miles.

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 C-1(quadrangle 1:63,360 scale)

Ophir NE(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

Materials information

Materials Type of material
Gold 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) -156.13091, 63.60966
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The rocks in the vicinity of Graham Creek consist of chert, argillite, and volcaniclastic rocks. A headwater tributary of Graham Creek, Cripple Creek, drains a monzonitic intrusion (Chapman and others, 1985). This Cretaceous/Tertiary monzonitic intrusion is the probable source of gold in these creeks (Bundtzen and others, 1987). Prospecting and development work were reported along Graham Creek in 1940 (Smith, 1942); the exact location of prospecting is unknown. Two headwater tributaries to Graham Creek, Bear Creek (OP003) and Cripple Creek (OP005), were both mined.
  • Age = Quaternary. Cripple Creek, a headwater tributary of Graham Creek, drains a Cretaceous/Tertiary monzonitic intrusive body that is the probable source of gold in these creeks (Bundtzen and others, 1987).

Economic information about the deposit and operations

Development status Prospect

Mining district

District name Innoko

Comments on the workings information

  • Workings / Exploration = Prospecting and development work were reported along Graham Creek in 1940 (Smith, 1942); the exact location of the work is unknown. Two headwater tributaries to Graham Creek, Bear Creek (OP003) and Cripple Creek (OP005) were both mined.

Reference information

Bibliographic references

  • 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

    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.

  • Deposit

    Smith, P.S., 1942, Mineral industry of Alaska in 1940: U.S. Geological Survey Bulletin 933-A, p. 1-102.

Comments on the references

  • Primary Reference = Smith, 1942

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.