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

Unnamed (on Granite Island)

Occurrence in Alaska, United States with commodity Gold
Map
XML
JSON
KML
C
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. 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 10000425
MRDS ID A010592
Record type Site
Current site name Unnamed (on Granite Island)

Geographic coordinates

Geographic coordinates: -149.79641, 59.6345 (WGS84)
Relative position Granite Island is located in Harris Bay about 35 miles southwest of Seward Alaska. The occurrence is located on the southwest side of the island in the first cove north of Granite Cape; it is in the NE1/4 of section 28, T. 6 S., R. 3 W., of the Seward Meridian. This location is accurate to within a quarter of a mile. This is location 116 of Tysdal (1978).

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Blying Sound C-8 NE(quadrangle 1:24,000 scale)

Blying Sound NW(quadrangle 1:100,000 scale)

Blying Sound(quadrangle 1:250,000 scale)

Federal lands

Alaska Maritime National Wildlife Refuge(National Wildlife Refuge)

National Wildlife Refuge FWS(Type of land area)

FWS(Federal land areas administered by FWS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Quartz Gangue

Alteration

  • (Local) None reported.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -149.79641, 59.6345
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The occurrence is described as a 10-centimeter-wide quartz vein which crosscuts coarse-grained, foliated biotite granite. Tysdal and Case (1979) have dated the granite as Eocene.
  • Age = Eocene or younger; vein cuts Eocene granite.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Homer

Comments on the reserve resource information

  • Reserves = None reported.

Comments on the workings information

  • Workings / Exploration = A surface sample contained, 0.2 PPM Au by A.A. and 150 PPM Cu by semi-quantitative analysis (Tysdal, 1978).

Reference information

Bibliographic references

  • Deposit

    Tysdal, R.G., and Case, J.E., 1979, Geologic map of the Seward and Blying Sound quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-1150, scale 1:250,000.

  • Deposit

    Cobb, E.H. and Tysdal, R.G., 1980, Summaries of data on and list of references to metallic and selected nonmetallic mineral deposits in the Blying Sound and Seward quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-621, 276 p.

  • Deposit

    Tysdal, R.G., 1978, Mines, prospects, and occurrences map of the Seward and Blying Sound quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-880-A, 2 sheets, scale 1:250,000.

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

Comments on the references

  • Primary Reference = Tysdal, 1978

General comments

Subject category Comment text
Deposit Model Name = Insufficient information to classify.

Reporter information

Type Date Name Affiliation Comment
Reporter 25-JAN-1999 Jeff A. Huber U.S. Geological Survey

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.