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Douglas Island Deposit

Producer in Alaska, United States with commodities Vanadium, Chromium, Copper, PGE, Scandium, Nickel, Cobalt
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Alteration
  7. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10109596
MRDS ID M046997
Record type Site
Current site name Douglas Island Deposit

Geographic coordinates

Geographic coordinates: -134.39534, 58.27808 (WGS84)

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Juneau B-2 SE(quadrangle 1:24,000 scale)

Juneau SE(quadrangle 1:100,000 scale)

Juneau(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lynn Canal(hydrologic unit)

Northern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • AREA INCLUDES DOUGLAS ISLAND, EAST SIDE OF LYNN CANAL SOUTH OF BERNERS BAY, AND GLASS PENINSULA ON EASTERN ADMIRALTY ISLAND. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Vanadium Critical Primary
Chromium Critical Primary
Copper Primary
PGE Critical Secondary
Scandium Critical Tertiary
Nickel Critical Tertiary
Cobalt Critical Tertiary

Comments on the commodity information

  • NO DATA AVAILABLE FOR PGM CONTENT IN ULTRAMAFICS

Alteration

  • (Local) Barrovian Metamorphism (Mainly In The Prehnite-Pumpellyite Metagraywacke Facies, Increasing Eastward To The Lower Greenschist Facies On Eastern Douglas Island)

Analytical data

Result PGM: AVERAGE PALLADIUM 12 PPB
Result AVERAGE PLATINUM 6 PPB
Result AVERAGE PT: PD .51
Result AVERAGE PT: (PT & PD) .34 . AVERAGE PD CONTENT, IN PARTS PER MILLION OF METAVOLCANIC ROCKS: MEAN - 0.012
Result RANGE-TR. TO 0.019
Result STANDARD DEVIATION - 0.003 .

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock
    Rock unit name Douglas Island Volcanics
    Rock description Douglas Island Volcanics
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone

Nearby scientific data

(1) -134.39534, 58.27808
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    FORD, A., BREW, D., 1978 , MINOR METAL CONTENT OF CRETACEOUS GREENSTONE, JUNEAU, ALASKA: U.S.G.S. CIRCULAR 772 - B, P. B - 85

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1979 Saso, Jerri L. 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.