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

Unnamed (south of Nunatak Fiord)

Occurrence in Alaska, United States with commodities Gold, Cobalt, 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. 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 10308482
Record type Site
Current site name Unnamed (south of Nunatak Fiord)

Geographic coordinates

Geographic coordinates: -139.05225, 59.8297 (WGS84)
Relative position The locality is a lode occurrence on The Nunatak south of Nunatak Fiord about 8 miles east of the mouth of the fiord. The occurrence is number 1 of Cobb (1972). The approximate location of the site was estimated from pl. 1 of MacKevett and Plafker (1970).

Site location context

Political divisions (FIPS codes)

Yakutat(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Yakutat D-3(quadrangle 1:63,360 scale)

Yakutat NE(quadrangle 1:100,000 scale)

Yakutat C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Dezadeash River(hydrologic unit)

Gulf of Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Russell Fjord Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Cobalt Critical Secondary
Copper Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Quartz Gangue

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Nearby scientific data

(1) -139.05225, 59.8297
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Economic information

Comments on the geologic information

  • Geologic Description = Sulfide-bearing quartz veins a few inches wide occur in weakly metamorphosed schist-phyllite of original sedimentary and volcanic origin. The rocks belong to the Yakutat group. A representative sample of quartz vein material collected by MacKevett and Plafker (1970) contained anomalous amounts of gold, cobalt, and copper.
  • Age = Tertiary

Economic information about the deposit and operations

Development status Occurrence

Mining district

District name Yakutat

Comments on the workings information

  • Workings / Exploration = Outcrop sample.

Reference information

Bibliographic references

  • Deposit

    MacKevett, E.M., Jr., and Plafker, G., 1970, Geochemical and geophysical reconnaissance of parts of the Yakutat and Mount St. Elias quadrangles, Alaska: U.S. Geological Survey Bulletin 1312-L, 12 p.

  • Deposit

    Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bering Glacier, Icy Bay, Middleton Island, and Yakutat quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-1246, 41 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Yakutat quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-408, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = MacKevett and Plafker, 1970.

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Deposit Other Comments = MacKevett and Plafker (1970, sample number 67APr-34A) reported 0.08 ppm gold, 200 ppm cobalt, and 300 ppm copper in a grab sample of a quartz vein, chosen as representative of numerous quartz veins found at and near this location. Data on the occurrence are given in Cobb (1979).

Reporter information

Type Date Name Affiliation Comment
Reporter 15-APR-99 Hawley, C.C. Hawley Resource Group

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.