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

Offield Creek

Past Producer in Alaska, United States with commodity Gold
Map
XML
JSON
KML
C
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 10003248
MRDS ID A016068
Record type Site
Current site name Offield Creek
Related records 10111860

Geographic coordinates

Geographic coordinates: -166.00948, 65.30123 (WGS84)
Relative position Offield Creek is a south-flowing stream whose mouth is on the northeast shore of Grantley Harbor, 9.25 miles east of Teller. The creek is in the southeast corner of the Teller B-3 quadrangle and adjacent parts of the Teller B-2 quadrangle. Placer operations were apparently on upstream parts of the drainage at surface elevations of about 400 feet (Cobb and Sainsbury, 1972). This is locality 70 of Cobb and Sainsbury (1972). Cobb (1975) summarized relevant references under the name 'Offield Cr.'.

Site location context

Political divisions (FIPS codes)

Nome(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Teller B-3(quadrangle 1:63,360 scale)

Teller SE(quadrangle 1:100,000 scale)

Teller C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Imuruk Basin(hydrologic unit)

Norton Sound(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Brevig Mission Corporation(ANCSA Village)

ANCSA Village 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

Nearby scientific data

(1) -166.00948, 65.30123
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Bedrock in the Offield Creek drainage is a schistose chlorite and mica schist assemblage that is locally intruded by small greenstone bodies (Sainsbury, 1972); the age of this assemblage is uncertain but it is probably Paleozoic. Although Cobb (1975) states that this creek has been extensively placer mined, primarily in the 1930s, Sainsbury and others (1969) did not show the location of placer workings. The character of the placer deposit has not been described.
  • Age = Quaternary

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Probably inactive

Mining district

District name Port Clarence

Comments on the production information

  • Production Notes = Not known, primarily in the 1930's

Comments on the reserve resource information

  • Reserves = Not defined

Comments on the workings information

  • Workings / Exploration = Cobb (1975) states that this creek has been extensively placer mined.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Cobb, 1975

General comments

Subject category Comment text
Deposit Model Name = Alluvial Au placer (Cox and Singer, 1986; model 39a)

Reporter information

Type Date Name Affiliation Comment
Reporter 10-MAY-1998 Travis L. Hudson Applied Geology

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.