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  3. Mineral Resource Data System (MRDS)

Unnamed (southwest of Mt Dagelet)

Occurrence in Alaska, United States with commodities Nickel, 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. 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 10307812
Record type Site
Current site name Unnamed (southwest of Mt Dagelet)

Geographic coordinates

Geographic coordinates: -137.23011, 58.58471 (WGS84)
Relative position The occurrence is on the south wall of a glacier about 2.6 miles at 248 degrees (true azimuth) from Mt. Dagelet in extremely rugged country. Rossman (1963, p. F44) reported this locality as a prominent gossan similar to those observed over nickel-copper deposits on Yakobi Island in the Sitka D8 quadrangle (also see MF002). The gossan was not examined on the ground either by Rossman or, in 1977, by the U.S. Bureau of Mines (Kimball and others, 1978, p. C110-111). The location is probably within 0.2 mile of Rossman's observed gossan.

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
Nickel Critical Primary
Copper Secondary

Materials information

Materials Type of material
Limonite Ore

Alteration

  • (Local) Prominent iron-rich gossan.

Nearby scientific data

(1) g
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Gossan similar to that observed at the Yakobi Island nickel-copper deposits on the Sitka D-8 quadrangle was observed remotely by Rossman (1963). The site is in the Crillon-LaPerouse layered mafic-ultramafic pluton within about 0.3 mile of its southwestern contact with biotite-hornblende schist (Brew and others, 1978).
  • Ore Material = Ni-Cu bearing sulfides
  • Age = Tertiary.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Yakutat

Comments on the workings information

  • Workings / Exploration = Surface exposures, not examined on the ground.

Reference information

Bibliographic references

  • 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

    Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p.

  • 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 = Rossman, 1963 (B 1121-F)

General comments

Subject category Comment text
Deposit Model Name = Magmatic segregation.
Deposit Other Comments = the site is in Glacier Bay National Park and Preserve.

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.