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

Unnamed (Adams Inlet)

Prospect in Alaska, United States with commodity Molybdenum
Map
XML
JSON
KML
B
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 10002273
MRDS ID A013177
Record type Site
Current site name Unnamed (Adams Inlet)
Related records 10258608

Geographic coordinates

Geographic coordinates: -136.05209, 58.84973 (WGS84)
Relative position A molybdenite occurrence was reported by Buddington and Chapin (1929, p. 330) on the north side of Adams Inlet; apparently the same locality was cited by Smith (1942, p. 178). MacKevett and others (1971) found altered amygdaloidal basalt with somewhat anomalous molybdenum for a distance of about 500 feet on the north shore about 2.3 miles up the Inlet in the Juneau D-6 quadrangle, but apparently did not find the locality referred to by Buddington and Chapin. The coordinates are for a point just east of Pt. George, about at the point shown by Cobb (1972). The location is uncertain but is geologically reasonable.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Fairweather D-1 SE(quadrangle 1:24,000 scale)

Juneau NW(quadrangle 1:100,000 scale)

Mount Fairweather(quadrangle 1:250,000 scale)

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
Molybdenum Primary

Materials information

Materials Type of material
Molybdenite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Skarn (Tactite)

Nearby scientific data

(1) -136.05209, 58.84973
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Granite of Cretaceous age forms a batholithic mass that crops out on Point George and extends northerly to the Klotz Hills. Another granitic intrusion, about 1 mile across, occurs on the north side of Adams Inlet 1 mile east of the granite exposed on Point George. The two granitic intrusives are separated by volcanic and sedimentary rocks of Devonian and Silurian age (Brew and others, 1978, pl. 1A).? Buddington and Chapin (1929, p.330) reported molybdenite as coatings on fracture surfaces in metamorphic rocks, mainly hornfels and tactite, on the north side of Adams Inlet. The molybdenite occurrence is inferred to be in the belt of sedimentary and volcanic rocks that separates the major granitic intrusion exposed on Point George from the smaller mass exposed in Adams Inlet about two miles east of Point George.
  • Age = Cretaceous or younger.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Juneau

Comments on the workings information

  • Workings / Exploration = Ten claims reported in 1912 (Kimball and others, 1978, p. C351); there are no obvious workings.

Reference information

Bibliographic references

  • Deposit

    Buddington, A.F., and Chapin, Theodore, 1929, Geology and mineral deposits of southeastern Alaska: U.S. Geological Survey Bulletin 800, 398 p.

  • Deposit

    Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Mt. Fairweather and Skagway quadrangles, Alaska: U.S. Geological Survey Open-File Report 78-316, 123 p.

  • 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.

  • Deposit

    Smith, P.S., 1942, Occurrences of molybdenum in Alaska: U.S. Geological Survey Bulletin 926-C, p. 161-210.

Comments on the references

  • Primary Reference = Buddington and Chapin, 1929

General comments

Subject category Comment text
Deposit Model Name = Tactite or skarn molybdenum occurrence.
Deposit Other Comments = the site is in Glacier Bay National Park and Preserve.

Reporter information

Type Date Name Affiliation Comment
Reporter 14-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.