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

Unnamed (Inian Islands)

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 10307806
Record type Site
Current site name Unnamed (Inian Islands)

Geographic coordinates

Geographic coordinates: -136.34207, 58.24572 (WGS84)
Relative position The site is in the Inian Island group about 1.5 miles north of Point Lavinia. Point Lavinia is at the north end of the Inian Peninsula on Chichagof Island. The location was taken from plate 16 of Rossman (1959, B 1058-E) and is probably accurate within 0.25 mile.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Fairweather A-2 NE(quadrangle 1:24,000 scale)

Juneau SW(quadrangle 1:100,000 scale)

Mount Fairweather(quadrangle 1:250,000 scale)

Federal lands

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Magnetite Ore

Nearby scientific data

(1) -136.34207, 58.24572
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The occurrence is in a Mesozoic terrane consisting of greenstone with minor limestone and amphibolite of Triassic age and volcanic-rich schist of Jurassic age. Foliated diorite of Jurassic or Cretaceous age crops out on the far western Inian Island, about 1/2 mile southwest of the iron occurrence (Rossman, 1959, plate 12). The occurrence is shown on plate 16 of Rossman (1959), but is not otherwise described; it could be either in the Triassic or Jurassic series. It is assumed, but not known, to be a magnetite replacement in limestone or greenschist related to the emplacement of the late Mesozoic foliated hornblende diorite.
  • Age = Jurassic or Cretaceous.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Chicagof

Comments on the workings information

  • Workings / Exploration = No workings were reported.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Rossman, 1959 (B 1058-E)

General comments

Subject category Comment text
Deposit Model Name = Distal magnetite replacement body in limestone or greenschist.
Deposit Other Comments = the site is Tongass National Forest; it appears to be in an area open for mineral location.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-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.