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

Unnamed (west-northwest of Mt. Dagelet)

Occurrence in Alaska, United States with commodity Titanium
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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. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10002229
MRDS ID A013131
Record type Site
Current site name Unnamed (west-northwest of Mt. Dagelet)

Geographic coordinates

Geographic coordinates: -137.26906, 58.60471 (WGS84)
Relative position This occurrence is at an elevation of about 5600 feet on the southeast flank of Hill 7661 about 3.4 miles west-northwest of Mt. Dagelet (Rossman, B 1121-F, photograph fig. 17). Rossman's sample No. A37 (plate 1) is about 0.2 mile southeast. The site is also about 1.45 miles southeast of Peak 6902 , which Rossman called Mt. Lookout. The location is accurate within about 0.1 mile. The location is approximately the same as number 10 of Kimball and others (1978).

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
Titanium Critical Primary

Materials information

Materials Type of material
Ilmenite Ore

Mineral occurrence model information

Model code 5
USGS model code 3
Deposit model name Bushveld Fe-Ti-V

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Rock unit name Crillon-La Perouse Stock
    Rock description Crillon-La Perouse Stock
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro

Nearby scientific data

(1) -137.26906, 58.60471
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = This occurrence consists of ilmenite segregations in the Crillon-La Perouse layered mafic-ultramafic intrusion, along its southwestern contact zone (Brew and others, 1978). The adjacent metamorphic rocks are hornblende and biotite schist probably derived from a Mesozoic protolith. The intrusion is of Tertiary age.? An ilmenite magmatic segregation deposit exists at the site. It continues along strike of the layered intrusion for several hundred feet but could not be traced farther because of extremely steep topography. At the site, the intrusion is estimated to contain from 10 to 25 percent ilmenite (Rossman, 1963, 1121-F). A sample that contained 25 percent ilmenite contained 2 percent graphite by weight.
  • Age = Tertiary.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Glacier Bay

Comments on the reserve resource information

  • Reserves = An inferred resource could be calculated based on data given by Rossman.

Comments on the workings information

  • Workings / Exploration = There are no workings. Sample 53ARm a37 contained 25 percent ilmenite (Rossman, 1963, p. F43).

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 = Possibly Bushveld Fe-Ti-V (Cox and Singer, 1986; model 3). Magmatic segregation; ilmenite deposit in layered mafic-ultramafic intrusive.
Deposit Other Comments = the site is in Glacier Bay National Park and Preserve.

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.