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  3. Mineral Resource Data System (MRDS)

Portage Mountain

Past Producer in Alaska, United States with commodities Gold, Copper, Silver, Platinum
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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. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Land status
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10038114
MRDS ID M045396
Record type Site
Current site name Portage Mountain
Alternate or previous names Portage Mountain Mining Company, Silver King, Silver Star

Geographic coordinates

Geographic coordinates: -133.25189, 56.84974 (WGS84)
Relative position 38 MILES N. POINT BAKER

Site location context

Political divisions (FIPS codes)

Wade Hampton(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Petersburg D-4(quadrangle 1:63,360 scale)

Petersburg N(quadrangle 1:100,000 scale)

Petersburg(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Petersburg Creek-Duncan Salt Chuck Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Silver Secondary
Platinum Critical Tertiary

Materials information

Materials Type of material
Pyrite Ore

Analytical data

Result SCHIST SAMPLE= .4 OZ AU, 2 OZ AG, .3 OZ CU TO THE TON, TRACE PT

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) Kgb
ListMap

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Petersburg District

Land status

Ownership category National Forest

Reference information

Bibliographic references

  • Deposit

    WRIGHT, F. E., AND WRIGHT, C. W., 1908, P. 141

  • Deposit

    WRIGHT, C. W., 1909, P. 73 (B379)

  • Deposit

    BUDDINGTON, 1923, P. 69 (B739)

  • Deposit

    BERG AND COBB, 1967, P. 188 (B1246)

  • Deposit

    5) COBB, 1972 (MF 415)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1975 Blair, Will N. 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.