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  3. Mineral Resource Data System (MRDS)

Unnamed (southwest head of Wood River)

Occurrence in Alaska, United States with commodities Gold, Copper
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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. Alteration
  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. Reporter information

Geologic information

Identification information

Deposit ID 10000729
MRDS ID A011368
Record type Site
Current site name Unnamed (southwest head of Wood River)

Geographic coordinates

Geographic coordinates: -147.61893, 63.70658 (WGS84)
Relative position This occurrence is at an elevationof about 4,700 feet southwest of the head of Wood River. It is approximately 0.4 miles north-northwest of peak 6,445, in the NE1/4 of sec. 18, T. 14 S., R. 1 E., of the Fairbanks Meridian. The location is accurate to within 2000 feet. This is location 16 of Sherwood and others (1976).

Site location context

Political divisions (FIPS codes)

Denali(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Healy C-2(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
Copper Secondary

Materials information

Materials Type of material
Gold Ore
Malachite Ore

Alteration

  • (Local) The hydrothermal alteration is not described.

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (youngest) Triassic

Nearby scientific data

(1) -147.61893, 63.70658
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The country rocks in the area of this occurrence are the Devonian Yanert Fork sequence, an intensely deformed, thick, marine sequence dominantly of metasedimentary and metavolcanic rocks. The bulk of sequence is dark-gray to black carbonaceous shale with interbedded lithic sandstone and siltstone (Wilson and others, 1998). The occurrence is in hydrothermally altered gabbroic sills and dikes that cut the metasedimentary rocks. Samples of the altered zones show elevated gold and copper values. One sample contained 0.5 ppm gold (Sherwood and others, 1976).
  • Age = The gabbroic hostrocks are undated, but may be Triassic.
  • Age = Host rock is Triassic.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Bonnifield

Reference information

Comments on the references

  • Primary Reference = Sherwood and others, 1976

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.