Julian Creek

Past Producer in Alaska, United States with commodities Gold, Mercury, REE
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. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10002640
MRDS ID A015080
Record type Site
Current site name Julian Creek
Related records 10258409

Geographic coordinates

Geographic coordinates: -157.3729, 62.2094 (WGS84)
Relative position USGS MF-363, Loc. 36: Deposit 1 mile NW of George River

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 A-3(quadrangle 1:63,360 scale)

Iditarod SE(quadrangle 1:100,000 scale)

Iditarod C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Aniak(hydrologic unit)

Lower Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Mercury Secondary
REE Critical Secondary

Materials information

Materials Type of material
Cinnabar Ore
Gold Ore
Monazite Ore

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 Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Kuskokwim Group
    Rock description Kuskokwim Group
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -157.3729, 62.2094

Economic information

Comments on the geologic information

  • Geologic Description = Placer gold is in creek gravel. It was probably derived from granite porphyry at head of creek . Concentrates contain gold, cinnabar, and monazite (Cady and others, 1955; Miller and others, 1995)
  • 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 Aniak

Comments on the production information

  • Production Notes = Production estimated at 23,400 oz. Au (Bundtzen and others, 1985)

Comments on the workings information

  • Workings / Exploration = Surface: hydraulic

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Bundtzen and others, 1985

General comments

Subject category Comment text
Deposit Model Name = Placer:stream
Deposit Other Comments = Stream gradient about 100 ft. per mile.

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.

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.