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Unnamed (north of lower Yanert Glacier)

Occurrence in Alaska, United States with commodities Copper, 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 10307542
Record type Site
Current site name Unnamed (north of lower Yanert Glacier)

Geographic coordinates

Geographic coordinates: -147.68682, 63.65963 (WGS84)
Relative position This occurrence is at an elevation of about 7,000 feet, on a nunatak about 0.5 mile south-southeast of peak 7850. The map site is in the NE1/4 of sec. 35, T. 14 S., R. 1 W., of the Fairbanks Meridian. The location is accurate to within 2,000 feet. This is location 24 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
Copper Primary
Gold Secondary

Materials information

Materials Type of material
Chalcopyrite Ore

Mineral occurrence model information

Model code 91
USGS model code 24b
Deposit model name Massive sulfide, Besshi (Japanese deposits)
Mark3 model number 30

Nearby scientific data

(1) -147.68682, 63.65963
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The general area of this prospect is underlain by the Devonian Yanert Fork sequence which consists of siliceous mudstone, argillite, slate, phyllite, semischist, and impure quartzite, and minor metachert and metavolcanic rocks. The bedded rocks are cut by Triassic(?) sills and dikes (Wilson and others, 1998). The deposit reportedly consists of disseminated chaclopyrite and other sulfides, adjacent to a gabbro sill. Samples contained 2,300 ppm copper and 0.5 ppm gold (Sherwood and others, 1976).
  • Age = Possibly Late Triassic.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Bonnifield

Comments on the workings information

  • Workings / Exploration = Surface samples only.

Reference information

Comments on the references

  • Primary Reference = Sherwood and others, 1976

General comments

Subject category Comment text
Deposit Model Name = Besshi massive sulfide(?) (Cox and Singer, 1986; model 24b)

Reporter information

Type Date Name Affiliation Comment
Reporter 07-APR-00 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.