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  3. Mineral Resource Data System (MRDS)

Portage Creek

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. 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 10000714
MRDS ID A011352
Record type Site
Current site name Portage Creek

Geographic coordinates

Geographic coordinates: -147.14283, 63.90965 (WGS84)
Relative position This placer gold mine is on Portage Creek, an east-flowing tributary to the West Fork Little Delta River. The area of placer mining is near the landing strip, where Portage Creek turns from south to east. The map site is in sec. 3, T. 12 S., R. 3 E., of the Fairbanks Meridian. This is location 62 of Clark and Cobb (1972).

Site location context

Political divisions (FIPS codes)

Southeast Fairbanks(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Healy D-1(quadrangle 1:63,360 scale)

Mount Hayes NW(quadrangle 1:100,000 scale)

Healy(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) -147.14283, 63.90965
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Most of Portage Creek drains Miocene to Pliocene Nenana Gravel and Eocene coal-bearing strata. The Nenana Gravel consists of poorly-consolidated, buff to reddish-brown, fluvial conglomerate and coarse grained sandstone interbedded with mudflow deposits and thin lignite beds (Wilson and others, 1998). The placer gold in Portage Creek probably was derived from small gold paleoplacers in the Nenana Gravel.
  • Age = Quaternary.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic

Comments on exploration

  • Status = Active?

Mining district

District name Bonnifield

Comments on the workings information

  • Workings / Exploration = Surface workings only.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Cobb, 1978 (OFR 78-1062)

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-APR-2000 N. Van Wyck Stevens Exploration Management Corporation

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.