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  3. Mineral Resource Data System (MRDS)

Black Diamond Fraction

Prospect in Alaska, United States with commodities Gold, Silver
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mineral rights holdings
  11. Land status
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10161489
MRDS ID A011461
MAS/MILS ID 0020860039
Record type Site
Current site name Black Diamond Fraction
Alternate or previous names Last Chance, Alaska Gold Hill
Related records 10000811

Geographic coordinates

Point of reference Claim
Geographic coordinates: -146.51816, 61.1274 (WGS84)
Elevation 122
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 007 W 32 SE Alaska

Commodities

Commodity Importance
Gold Primary
Silver Tertiary

Nearby scientific data

Claim (1) -146.51816, 61.1274
ListMap

Economic information

Ore body information

  • Strike N10E
    Dip 55W
    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 N10E:55W
    Date of Last Modification 881017
  • Strike N40E
    Dip 85E
    Width 0.1M
    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 N40E:85E
    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

  • Workings reported to consist of 2 adits. The Last Chance (1) claim has an adit with a 22.9 m. crosscut and a 16.8 m drift. The Black Diamond Fraction (2) adit is 36.6 m.- long.

Reference information

Bibliographic references

  • Ownership

    ALASKA KARDEX 086-081

  • Deposit

    B1246 pp. 67-69 (Locality # 46)

  • Deposit

    OF79-1241 167 pp.

  • Deposit

    B1139 363 pp.

  • Deposit

    B662i pp. 152, 183

  • Deposit

    B662h p. 191

  • Deposit

    B692g p. 151

  • Deposit

    MF438

  • Deposit

    BMOF69-73

  • Deposit

    OF80-892B

  • Deposit

    MLA5-84 218 pp., (Locality V-44).

Reporter information

Type Date Name Affiliation Comment
Reporter 17-OCT-88 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.