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Upper Ruby Creek

Past Producer in Alaska, United States with commodities Silver, Gold, Bismuth, Thorium, Tungsten
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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 10009621
MRDS ID D002708
Record type Site
Current site name Upper Ruby Creek

Geographic coordinates

Geographic coordinates: -154.78101, 63.23254 (WGS84)
Relative position The Upper Ruby Creek mine is located at an elevation of 1,000 feet (300 m) in Section 13, T. 26 S., R. 22 E., of the Kateel River Meridian. Location is within 300 feet (91 m).

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Medfra A-4(quadrangle 1:63,360 scale)

Medfra S(quadrangle 1:100,000 scale)

Medfra C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Stony River(hydrologic unit)

Upper Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Bismuth Critical Secondary
Thorium Secondary
Tungsten Critical Secondary

Comments on the commodity information

  • Ore Material = radioactive mineral (brookite)

Materials information

Materials Type of material
Bismuth Ore
Gold Ore
Scheelite Ore
Ilmenite Gangue
Magnetite Gangue

Mineral occurrence model information

Model code 121
USGS model code 39c
Deposit model name Shoreline placer Ti

Nearby scientific data

(1) -154.78101, 63.23254
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Upper Ruby Creek placer mine is a continuation of the Ruby Creek-Strand deposit (MD069); the only difference is a higher stream gradient of 250 feet/mile. White and Stevens (1953) studied the abundant radioactive concentrates from Upper Ruby Creek placer deposit. Age of mineralization is unknown, but probably Quaternary, based on local geomorphology.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name McGrath

Comments on the production information

  • Production Notes = Production data is scant and was lumped with Ruby Creek-Strand and Crystal Gulch deposits, which collectively produced 1,511 ounces (47 kg) of gold from 1920 to 1942.

Comments on the workings information

  • Workings / Exploration = Upper Ruby Creek was mined mostly prior to 1925 (Brown, 1926).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Mertie, 1936

General comments

Subject category Comment text
Deposit Model Name = Placer Au-PGE (Cox and Singer, 1986; model no. 39c)
Deposit Other Comments = See Ruby Creek-Strand (MD068) and Crystal Gulch (MD070) deposits. The Upper Ruby Creek mine is on lands selected or conveyed to Doyon Ltd. For further information, contact Doyon Ltd. at 210 1st Ave., Fairbanks, Alaska, 99701.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-JUN-98 Bundtzen, T.K. Pacific Rim Geological Consulting

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.