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

Riley Creek

Past Producer 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. 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 10097510
MRDS ID A011875
Record type Site
Current site name Riley Creek

Geographic coordinates

Geographic coordinates: -156.90039, 67.03843 (WGS84)
Relative position Location at head of Riley Creek 3000 ft. (1 km) northeast of Shields Mountain in the Cosmos Hills, in T. 19 N., R. 9 E., Kateel River Meridian. Shown as locality 28 in Mayfield and Grybeck (1978). Location accurate to within 1000 ft. (300 m).???

Site location context

Political divisions (FIPS codes)

Northwest Arctic(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Ambler River SE(quadrangle 1:100,000 scale)

Ambler River(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Kobuk River(hydrologic unit)

Kobuk-Selawik Rivers(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

NANA Regional Corporation, Incorporated(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

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

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel

Nearby scientific data

(1) -156.90039, 67.03843
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Eluvial placer 200 m long, less than 10 m wide and about 2 m thick in high, steep and dry tributary to Riley Creek. Much of Au in bedrock crevices; also visible free Au is in quartz veins in drainage basin. Basin contains colluvium composed of slate, limestone and quartz gravel, and a few large greenstone boulders, up to 2 ft (0.6 m) in diameter, probably of glacofluvial origin (Fritts, 1970, p.58)

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Shungnak

Comments on the workings information

  • Workings / Exploration = Surface.

Reference information

Comments on the references

  • Primary Reference = Cobb, 1973

General comments

Subject category Comment text
Deposit Model Name = Placer
Deposit Other Comments = Area mined was a high, steep, and dry tributary of Riley Creek (Smith and Mertie, 1930, p. 336).

Reporter information

Type Date Name Affiliation Comment
Reporter 30-APR-1997 K.R. Leonard U.S. Geological Survey
Reporter 30-APR-1997 R.L. Elliott U.S. Geological Survey
Reporter 30-APR-1997 S.W. Nelson 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.