1. Mineral Resources
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  3. Mineral Resource Data System (MRDS)

Unnamed (north wall of South Crillon 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 10002223
MRDS ID A013125
Record type Site
Current site name Unnamed (north wall of South Crillon Glacier)

Geographic coordinates

Geographic coordinates: -137.31101, 58.63665 (WGS84)
Relative position The occurrence is on the north wall of Crillon Glacier 5.35 miles west- southwest of the summit of Mt. Crillon. It is at an elevation of about 3200 feet at the contact of the Crillon-La Perouse layered complex with schist. The occurrence is accurate to about 0.2 mile. The location is approximately the same as number 80 of MacKevett and others (1971) and number 3 of Cobb (1972). The occurrence is approximately 0.2 mile southwest of MF005, an occurrence of nickel and copper.

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

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrrhotite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
    Rock unit name Crillon-La Perouse Stock
    Rock description Crillon-La Perouse Stock

Nearby scientific data

(1) -137.31101, 58.63665
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Mineralized layered gabbro near the western contact of Crillon-La Perouse layered mafic-ultramafic body contains 5-6 percent of disseminated pyrrhotite and chalcopyrite. The sulfide minerals probably are magmatic segregations the area is near the part of the stock described by Rossman (1963, B 1121-F, p. F42-43).
  • 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 workings information

  • Workings / Exploration = There are no workings. Direct knowledge of this occurrence is based on sampling of R. H. Goldthwait of the Harvard-Dartmouth Expedition cited by Kennedy and Walton (1946, p. 71), who reported 5 to 6 percent of sulfides--pyrrhotite and chalcopyrite--near the contact of the intrusive. No other party has been able to reach the Goldthwait occurrence.

Reference information

Bibliographic references

  • Deposit

    Kennedy, G.C. and Walton, M.S., Jr., 1946, Geology and associated mineral deposits of some ultrabasic rocks in southeastern Alaska: U.S. Geological Survey Bulletin 947-D, p. 65-84.

  • Deposit

    Rossman, Darwin, 1963, Geology and petrology of two stocks of layered gabbro in the Fairweather Range, Alaska: U.S. Geological Survey Bulletin 1121-F, p. F1-F50.

  • Deposit

    MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G., 1971, Mineral resources of Glacier Bay National Monument, Alaska: U.S. Geological Survey Professional Paper 632, 90 p., 12 plates, scale 1:250,000.

  • 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.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Mount Fairweather quadrangle, AK: U.S. Geological Survey Miscellaneous Field Study Map MF-436, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Kennedy and Walton, 1946

General comments

Subject category Comment text
Deposit Model Name = Copper-nickel(?) segregation deposit in a layered mafic-ultramafic intrusive.
Deposit Other Comments = Site has been inaccessible because of rock falls since the early examination by Goldthwait. It is close enough to the nickel-copper deposit at locality MF005 to suggest the possible continuity of mineralization in this part of the layered complex. The site is in Glacier Bay National Park and Preserve.? Kennedy and Walton (1946) cite an unpublished report by Goldthwait that may be in Dartmouth or Harvard Expedition files.

Reporter information

Type Date Name Affiliation Comment
Reporter 06-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.