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

Unnamed (east of Dundas Bay)

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

Geologic information

Identification information

Deposit ID 10307818
Record type Site
Current site name Unnamed (east of Dundas Bay)

Geographic coordinates

Geographic coordinates: -136.17207, 58.34972 (WGS84)
Relative position The occurrence is at or near the north shoreline of Icy Strait and about 5 miles northeast of the mouth of Dundas Bay. It is approximately located within about 0.5 mile. The approximate location was taken from an unpublished map by Darwin Rossman (MacKevett and others, 1971, locality 33). The site is approximately the same as number 60 of Cobb (1972) and number 69 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 B-1(quadrangle 1:63,360 scale)

Juneau SW(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
Iron Primary

Materials information

Materials Type of material
Magnetite Ore

Nearby scientific data

(1) -136.17207, 58.34972
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The occurrence is an inferred iron deposit based on old claim activity (1903), permissive geology, and the existence of a strong magnetic anomaly reported near the locality by MacKevett and others (1971, p. 70). .Geologically, carbonate rocks of Devonian-Silurian age are sandwiched between granite or Cretaceous age to the west and granite of Tertiary age to the east (Brew and others, 1978). The carbonate section is a permissive host for metasomatic iron deposits. Another permissive locality for a contact metasomatic iron occurrence is the southwest contact of Tertiary granite with the carbonate septum about 1/2 mile to the northeast of the first possible locality (MacKevett and others, 1971, pl. I). Iron locality 33 of MacKevett and others is shown within the foliated granite, but the location was from a reported mineral occurrence that was not examined by the U.S. Geological Survey in 1966. Stream-sediment samples anomalous in total heavy metals (THM) were reported near the site.
  • Age = Cretaceous or younger.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Juneau

Comments on the workings information

  • Workings / Exploration = Four claims were staked for iron in the area in 1903; five other claims were staked nearby for unspecified commodities before 1953 (Kimball and others (1978, p. C270).

Reference information

Bibliographic references

  • 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

    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.

  • 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 = MacKevett and others, 1971

General comments

Subject category Comment text
Deposit Model Name = Contact metasomatic iron deposit.
Deposit Other Comments = MacKevett and others (1971, p. 70) cited a magnetic anomaly on the north side of Icy Strait near their locality 33. The size of the magnetic anomaly suggests that a substantial iron deposit is possible. The magnetic anomaly is on USC & GS Chart No. 8202, 13th edition.. 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.