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Sea Coast Mining Co.

Prospect in Alaska, United States with commodities Copper, Gold, Lead, Zinc
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mineral rights holdings
  12. Land status
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10185939
MRDS ID A011455
MAS/MILS ID 0020860033
Record type Site
Current site name Sea Coast Mining Co.
Alternate or previous names Portland, Seacoast Mining Co., Henry Stevens, Sw Slope Mt. Shasta
Related records 10000806

Geographic coordinates

Point of reference Claim
Geographic coordinates: -146.59006, 61.15789 (WGS84)
Elevation 661
Location accuracy 500(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)

Geographic areas

Country State
United States Alaska

Public Land Survey System information

Meridian Township Range Section Fraction State
Copper River 008 S 008 W 24 SWNESW Alaska

Commodities

Commodity Importance
Copper Tertiary
Gold Primary
Lead Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Unknown
Galena Unknown
Gold Unknown
Pyrite Unknown
Pyrrhotite Unknown
Sphalerite Unknown

Nearby scientific data

Claim (1) -146.59006, 61.15789
ListMap

Economic information

Ore body information

  • Strike N25W
    Dip 90E
    Length 45.7M
    Width 0.6M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 TABULAR
    Type of Orebody #3 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N25W:90E
    Date of Last Modification 881017
  • Strike N10W
    Dip 55E
    Width 1.5M
    Field Value
    MAS Matrix # 2
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 TABULAR
    Type of Orebody #3 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N10W:55E
    Date of Last Modification 881017
  • Strike N33W
    Dip 47W
    Width 0.3M
    Field Value
    MAS Matrix # 3
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 TABULAR
    Type of Orebody #3 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N33W:47W
    Date of Last Modification 881017
  • Strike N90E
    Dip 50N
    Length 76.2M
    Width 0.3M
    Field Value
    MAS Matrix # 5
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 TABULAR
    Type of Orebody #3 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N90E:50N
    Date of Last Modification 881017

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category State

Comments on the workings information

  • USGS CRIB A003733 USGS CRIB A003831 USGS CRIB A003831 Workings consist of a (1) 15.2 m.-long adit, (2)a 80.8 m.-long adit with a 1.2 m. winze and a 7.6 m. raise, (3) open cuts, (4) stripping, and (5)a shallow shaft.

Reference information

Bibliographic references

  • Ownership

    ALASKA KARDEX 086-077

  • Ownership

    ALASKA KARDEX 086-078

  • Deposit

    B592k p. 239

  • Deposit

    B622j pp. 153, 181

  • Deposit

    B622j pp. 178-179, (Locality #34).

  • Deposit

    B642g p. 144

  • Deposit

    BMB153 p. 49

  • Deposit

    MR32

  • Deposit

    B662h p. 192

  • Deposit

    MIRL 27 p. 108

  • Deposit

    B662h p. 191

  • Deposit

    MF438

  • Deposit

    BMOF69-73

  • Deposit

    B1246 pp. 66,68

  • Deposit

    B1139 363pp.

  • Deposit

    OF80-892B

  • Deposit

    MLA5-84 218pp., (Locality V-58)

Reporter information

Type Date Name Affiliation Comment
Reporter 19-OCT-1988 Mirl-Dwb U.S. Bureau of Mines

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.