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

Unnamed (southeast of upper Finger Glacier)

Occurrence in Alaska, United States with commodities Copper, Nickel
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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. Host and associated rocks
  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 10002233
MRDS ID A013135
Record type Site
Current site name Unnamed (southeast of upper Finger Glacier)

Geographic coordinates

Geographic coordinates: -137.0521, 58.50971 (WGS84)
Relative position The deposit is probably on the south slope of a 7200-foot mountain about 3.5 miles south-southeast of the peak of Mt. LaPerouse in the NE 1/4, SW 1/4, section 6, T. 39 S., R. 51 E., of the Copper River Meridian. The location is based on a description by Leo Mark-Anthony (1977), but it is uncertain because the description of the site reported in Kimball and others (1978, location 14) does not match Mark-Anthony's elevation or approximate coordinates.

Site location context

Political divisions (FIPS codes)

Hoonah-Angoon(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Fairweather C-4(quadrangle 1:63,360 scale)

Mount Fairweather NE(quadrangle 1:100,000 scale)

Mount Fairweather(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Glacier Bay(hydrologic unit)

Northern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Glacier Bay National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Nickel Critical Primary

Comments on the commodity information

  • Ore Material = pentlandite or nickeliferous pyrrhotite

Materials information

Materials Type of material
Chalcopyrite Ore
Nickel Ore
Pentlandite Ore
Pyrrhotite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Crillon-Laperouse Stock
    Rock description Crillon-Laperouse Stock
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -137.0521, 58.50971
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Based on its reported location, the occurrence is in the central part of the Crillon-LaPerouse layered mafic-ultramafic intrusion of Tertiary age. The occurrences were described as 'lenses of nickel-bearing pyrrhotite in diorite within the mafic intrusion' (Mark-Anthony, 1977; also, communication Leo Mark-Anthony, 1998). A sample collected by Mark-Anthony contained 0.83 percent nickel and 0.18 percent copper. Copper is abundant enough to form a separate phase, probably chalcopyrite.
  • Age = Tertiary.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Yakutat

Comments on the reserve resource information

  • Reserves = Possible reserves contained in sulfide-bearing lenses as much as 10 feet thick and traceable for 500 feet.

Comments on the workings information

  • Workings / Exploration = Surface exposure of mineralized rock; no workings.

Reference information

Bibliographic references

  • Deposit

    Mark-Anthony, Leo, 1977, Maps and notes on investigations in Glacier Bay, 1958-1960. (Unpublished material available at U.S. Bureau of Land Management library, Juneau, Alaska).

  • Deposit

    Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.

Comments on the references

  • Primary Reference = Mark-Anthony, 1977

General comments

Subject category Comment text
Deposit Model Name = Lode: Disseminated copper and nickel-bearing minerals in dioritic phase(?) of layered mafic intrusive.
Deposit Other Comments = Chugach terrane. The location is in Glacier Bay National Park and Preserve.

Reporter information

Type Date Name Affiliation Comment
Reporter 05-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.