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Seacoast Prospect

Occurrence in Alaska, United States with commodities Gold, Copper, Lead, Zinc
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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. Controls for ore emplacement
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10000806
MRDS ID A011455
Record type Site
Current site name Seacoast Prospect
Alternate or previous names Bunker Hill
Related records 10185939

Geographic coordinates

Geographic coordinates: -146.5795, 61.14959 (WGS84)
Location accuracy 2000(meters)

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Valdez A-7(quadrangle 1:63,360 scale)

Valdez SW(quadrangle 1:100,000 scale)

Valdez(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Eastern Prince William Sound(hydrologic unit)

Prince William Sound(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Shoup Bay State Marine Park(State Marine Park)

State Marine Park ST(Type of land area)

ST(Federal land areas administered by ST)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • LOCATION APPROXIMATED FROM USGS OFR 80-892B, LOC. 11 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Lead Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Sphalerite Ore
Calcite Gangue
Chlorite Gangue
Limonite Gangue
Malachite Gangue
Pyrite Gangue
Quartz Gangue

Analytical data

Result NO DATA

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
    Rock unit name Valdez Group
    Rock description Valdez Group;Valdez Group

Nearby scientific data

(1) -146.5795, 61.14959
ListMap

Economic information

Controls for ore emplacement

  • Fracture Control

Comments on the geologic information

  • SCHISTOSITY OF COUNTRY ROCK STRIKES N 60-80 E, DIPS 60 N; VEIN AT BUNKER HILL LIES WITHIN A SMALL FOLD WITH AXIS PITCH OF 70 NE

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Port Valdez

Land status

Ownership category State

Comments on the production information

  • ONLY DATA ON PRODUCTION: SMALL TEST SHIPMENT MADE IN 1914 FROM SEA COST PROPERTY

Comments on the workings information

  • SEACOAST: AT LEAST 725 FT OF UNDERGROUND WORKINGS AND SURFACE IMPROVEMENTS INCLUDING MILL AND AERIAL TRAM; BUNKER HILL: DEVELOPED BY 100 FT ADIT; PRESENT CONDITIONS UNKNOWN

Comments on development

  • ACTIVE BETWEEN 1913 AND 1916; SMALL TEST SHIPMENT FROM SEACOAST IN1914

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit SEACOAST: SEVERAL FISSURE VEINS 1 IN TO 11 FT WIDE WITH LENSES OF QUARTZ GENERALLY LESS THAN 2 FT, BUT ONE LENS 10 FT THICK; STRIKE S 80 E TO N 10 E, 40 TO 60 N DIP; QUARTZ CARRIES PYRITE, GALENA, FREE GOLD, PYRRHOTITE, CHALCOPYRITE, SPHALERITE, CARBONATE AND CHLORITE; BUNKER HILL PROSPECT: QUARTZ-CALCITE-CHLORITE FISSURE VEIN 4 TO 25 IN THICK LOCALLY SHATTERED OR BANDED PARALLEL TO SHEAR; STRIKE N 70 E, DIP 63 W; LENTICULAR QUARTZ FILLING CARRIES ARSENOPYRITE, GALENA, PYRITE, SPHALERITE, LIMONITE AND PROBABLY GOLD ALTHOUGH NOT SPECIFICALLY MENTIONED IN LITERATURE
Deposit SEE ALSO: CLIFF MINE; DATA FOR SEACOAST AND BUNKER HILL COMBINED ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1985 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 14-APR-1994 Mosier, Dan 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.