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Minto-Def

Prospect in Canada with commodities Copper, Gold, Silver
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Nearby scientific data
  7. Economic information about the deposit and operations
  8. Ownership information
  9. Reserves and resources
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10158553
MAS/MILS ID 1220600008
Record type Site
Current site name Minto-Def
Alternate or previous names Main Zone, Def, Discovery

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -137.23849, 62.6165 (WGS84)

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country
Canada

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Silver Secondary

Nearby scientific data

Ore Body (1) -137.23849, 62.6165
ListMap

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Significant No

Ownership information

  • Type Owner
    Owner Western Copper Holdings Ltd.
    Interest 28
    Home office Canada
    Year 1979
  • Type Owner
    Owner Asarco (American Smelting And Refining Co.)
    Interest 32
    Home office New York
    Year 1979
  • Type Owner
    Owner Falconbridge Nickel Mines, Ltd.
    Interest 13
    Home office Canada
    Year 1979
  • Type Owner
    Owner United Keno Hill Mines Ltd.
    Interest 14
    Home office Canada
    Year 1979
  • Type Owner
    Owner Canadian Superior Exploration Ltd
    Interest 13
    Home office Canada
    Year 1979

Reserves and resources

  • Type In-situ
    Estimate year 1978
    Indicated 6550000mt ore
    Demonstrated 6550000mt ore
    Total resources 6550000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.86 wt-pct Copper Major 1978
    Gold Au 0.51 g/mt Gold Minor 1978
    Silver Ag 6.9 g/mt Silver Minor 1978
  • Type In-situ
    Estimate year 1974
    Indicated 2900000mt ore
    Demonstrated 2900000mt ore
    Total resources 2900000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.8 wt-pct Copper Major 1974
    Gold Au 0.52 g/mt Gold Minor 1974
    Silver Ag 6.9 g/mt Silver Minor 1974
  • Type In-situ
    Estimate year 1975
    Measured 4700000mt ore
    Demonstrated 4700000mt ore
    Total resources 4700000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.78 wt-pct Copper Major 1975
    Gold Au 0.52 g/mt Gold Minor 1975
    Silver Ag 6.9 g/mt Silver Minor 1975
  • Type In-situ
    Estimate year 1972
    Indicated 2200000mt ore
    Demonstrated 2200000mt ore
    Total resources 2200000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.5 wt-pct Copper Major 1972

Reference information

Bibliographic references

  • Ownership

    CANADIAN MINES HANDBOOK 1979-80, NORTHERN MINER PRESS LTD.,

  • Ownership

    1979, P.259,282.

  • Reserve-Resource

    ANNIS, R.C., D.A. CRANSTONE AND M. VALLEE, A SURVEY OF KNOWN

  • Reserve-Resource

    MINERAL DEPOSITS IN CANADA THAT ARE NOT BEING MINED;

  • Reserve-Resource

    ENERGY,MINES AND RESOURCES CANADA, MINERALS, MR 181,1978,

  • Reserve-Resource

    P.56, A42.

  • Reserve-Resource

    CRANSTONE, D.A. AND R.T. WHILLANS, CANADIAN RESERVES OF

  • Reserve-Resource

    COPPER, NICKEL, LEAD, ZINC, MOLYBDENUM, SILVER AND GOLD

  • Reserve-Resource

    AS OF JAN. 1, 1978, EMR CANADA, MINERALS, MR 185, 1979,

  • Reserve-Resource

    P.27.

  • Deposit

    MORIN, J.A., W.D SINCLAIR, D.B. CRAIG AND M. MARCHAND,

  • Deposit

    MINERAL INDUSTRY REPORT 1976, YUKON TERRITORY, INDIAN AND

  • Deposit

    NORTHERN AFFAIRS, P.68-82,177,178.

  • Deposit

    WESTERN MINER, SILVER STANDARD-ASARCO YUKON BET, SEPT., 1973

  • Deposit

    P.51.

  • Deposit

    WESTERN MINER, A MINE AT MINTO, DEC., 1973, P.48,49.

Reporter information

Type Date Name Affiliation Comment
Reporter 29-JUL-1991 Porter, Kenneth E. U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Operator history (post-MRDS)

MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:

  • Asarco (American Smelting And Refining Co.) — acquired by Asarco LLC, subsidiary of Grupo México (2009)
    American Smelting and Refining Co. Filed Chapter 11 in 2005; acquired out of bankruptcy by Grupo México in 2009.

Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.

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