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  3. Mineral Resource Data System (MRDS)

Boat Harbor

Occurrence in Alaska, United States with commodities Gold, Silver, Copper, Zinc, Lead, Mercury
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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. Alteration
  8. Mineral occurrence model information
  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 10003297
MRDS ID A106040
Record type Site
Current site name Boat Harbor

Geographic coordinates

Geographic coordinates: -176.65065, 51.84974 (WGS84)
Relative position Quarry across road from small boat harbor at Sweeper Cove. Location accurate with about 100 m.

Site location context

Political divisions (FIPS codes)

Aleutians West(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Adak C-2(quadrangle 1:63,360 scale)

Adak(quadrangle 1:100,000 scale)

Adak SE(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Western Aleutian Islands(hydrologic unit)

Aleutian Islands(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Aleut Corporation(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary
Zinc Critical Primary
Lead Secondary
Mercury Secondary

Materials information

Materials Type of material
Azurite Ore
Chalcopyrite Ore
Galena Ore
Malachite Ore
Sphalerite Ore
Epidote Gangue
Quartz Gangue

Alteration

  • (Local) Silicification and epidote replacement of country rocks.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

(1) -176.65065, 51.84974
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Volcanic breccias of the Finger Bay Volcanics are cut by a shear or fault zone, exposed in quarry. Zone is filled by quartz vein carrying abundant sulfide minerals, including chalcopyrite. Malachite/azurite staining coasts surrounding rocks. Epidote veins and segregations are common in vicinity of vein -- one float boulder of epidote was 30 cm in diameter.
  • Age = Tertiary

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Aleutians

Comments on the workings information

  • Workings / Exploration = Sampling of the vein during brief U.S. Geological Survey field work in 1993 yielded 100 ppb Au, 0.12 ppm Hg, 14 ppm Ag, 4,700 ppm Cu, 3,700 ppm Zn and 110 ppm Pb (sample 93 AWs 16). A mineralized sample of the volcanic breccia yielded 50 ppb Au, 11 ppm Ag, 4,700 ppm Cu, and 4,000 ppm Zn (sample 93 AWs 16b).

Reference information

Bibliographic references

  • Deposit

    UNPUBLISHED DATA U.S. GEOLOGICAL SURVEY, 1994

  • Deposit

    Unpublished data, U.S. Geological Survey, 1994

General comments

Subject category Comment text
Deposit Model Name = Polymetallic vein

Reporter information

Type Date Name Affiliation Comment
Reporter 22-FEB-1996 F.H. Wilson U.S. Geological Survey
Reporter 22-FEB-1996 T.D. Light 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.