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  3. Mineral Resource Data System (MRDS)

David Bell

Plant in Ontario, Canada 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. Commodities
  6. Materials information
  7. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Ownership information
  13. Production statistics
  14. Reserves and resources
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10206049
MAS/MILS ID 1220400120
Record type Site
Current site name David Bell
Alternate or previous names Eastern Extension, Teck/International Corona, Teck-Corona

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -85.89165, 48.6875 (WGS84)
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Canada Ontario

Commodities

Commodity Importance
Gold Primary
Silver Tertiary

Materials information

Materials Type of material
Molybdenite Unknown
Pyrite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) -85.89165, 48.6875
ListMap

Economic information

Ore body information

  • Strike S65E
    Dip 50N
    Thickness 3M
    Length 300M
    Depth to top 0M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 TABULAR
    Primary mode of Origin CONT METASOMATIC
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 SERICITIC
    Strike And Dip S65E:50N
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 861015
  • Thickness 10M
    Length 1525M
    Width 560M
    Depth to top 0M
    Field Value
    MAS Matrix # 1
    MAS Column # 2
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 TABULAR
    Primary mode of Origin CONT METASOMATIC
    Primary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 SERICITIC
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 861015

Comments on the geologic information

  • THE SECOND GEOMETRY RECORD DESCRIBES THE EAST ZONE.

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1981
Mining method Open Stope
Year of first production 1985
Plant type Leach
Plant subcategory Hydromet
Milling method Carbon-In-Pulp-Electrowin

Mining district

District name Hemlo District

Mineral rights holdings

Type of mineral rights Private Lease

Ownership information

  • Type Owner
    Owner Homestake Canada Inc.
    Interest 50
    Home office Canada
    Year 1993
    First year 1992
  • Type Owner
    Owner Teck Corp.
    Interest 50
    Home office Canada
    Year 1993
    First year 1992
  • Type Operator
    Owner Teck-Corona Operating Corp.
    Home office Canada
    Year 1997

Comments on the ownership information

  • TECK PROVIDED EXPLORATION AND DEVELOPMENT OF MINE. THE HEMLO 1/4 CLAIM WHICH IS INCLUDED IN THIS PROPERTY REPORT IS OWNED BY: CORONA 25%, TECK 25%, HEMLO 50%.

Production statistics

  • Year 1985
    Description 7.7g Au 98182 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 98182mt 8g/mt
  • Year 1986
    Description 9.3g Au Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 9g/mt
  • Year 1987
    Description 13.3g Au 362413 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 362413mt 13g/mt
  • Year 1988
    Description 17.7g Au Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 18g/mt
  • Year 1989
    Description 23.6g Au 426043 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 426043mt 24g/mt
  • Year 1990
    Description 21.8g Au 467273 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 467273mt 22g/mt
  • Year 1991
    Description 20.9g Au 463636 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 463636mt 21g/mt
  • Year 1992
    Description Ore Milled @ 16.114 Au G/Mt 469000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 469000mt 16g/mt
  • Year 1993
    Description Ore Milled @ 15.771 Au G/Mt 492000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 492000mt 16g/mt
  • Year 1994
    Description Ore Milled @ 15.086 Au G/Mt 465000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 465000mt 16g/mt
  • Year 1995
    Description Ore Milled @ 13.029 Au G/Mt 442000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 442000mt 13g/mt
  • Year 1996
    Description Ore Milled @ 17.829 Au G/Mt 387000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 387000mt 18g/mt

Comments on the production information

  • THE GOLD AND SILVER CONCENTRATES ARE SEPARATED AND REFINED IN OTTAWA.
  • DESCRIPTION SHOWS MILL FEED GRADES.

Reserves and resources

  • Type In-situ
    Estimate year 1991
    Demonstrated 6838000mt ore
    Total resources 6838000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 12.45 g/mt Gold Major 1991
  • Type In-situ
    Estimate year 1992
    Demonstrated 6842897mt ore
    Total resources 6842897mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 11.25 g/mt Gold Major 1992
  • Type In-situ
    Estimate year 1992
    Demonstrated 6300000mt ore
    Total resources 6300000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 10.9 g/mt Gold Major 1992
  • Type In-situ
    Estimate year 1995
    Demonstrated 2460285mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 10.59 g/mt Gold Major 1995
  • Type In-situ
    Estimate year 1997
    Demonstrated 5056648mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 9.977 g/mt Gold Major 1997
  • Type In-situ
    Estimate year 1992
    Demonstrated 6842897mt ore
    Total resources 6842897mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 11.25 g/mt Gold Major 1992

Comments on the reserve resource information

  • THE RESOURCE IS SEPARATED INTO TWO ZONES; WEST AND EAST ZONES. IN ADDITION, THE EAST ZONE CONTAINS A QUARTER CLAIM. 1995 RESOURCES, NO SILVER GRADE WAS GIVEN.
  • RESOURCES PROVEN + PROBABLE AS OF 12/31/96.
  • REPRESENTS RESOURCES USED IN A PREVIOUS, 1985, PROPERTY EVAL. RESOURCES USED IN THE 1993 PROPERTY EVALUATION, AND CANADIAN GOLD STUDY.

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method BENCH (BERM)
    Percent Waste Rock 75
    Hardness of Ore HARDPAN
    Capacity 1178
    Capacity Units MT ORE/DAY
    Unit Production Cost 10
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 3
    Year of Information 1984
  • Type of workings Underground
    Overall depth 1160M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN STOPE
    Percent Recovery 100
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. SUPPORTING
    Mine Support Chars. UNKNOWN
    Number of Shafts 1
    1st Condition of Workings OPEN
    Capacity 350
    Capacity Units MT ORE/DAY
    Unit Production Cost 17.67
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1984
  • Type of workings Underground
    Overall depth 1160M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method PROPOSED
    Mining Method OPEN STOPE
    Percent Recovery 100
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. SUPPORTING
    Mine Support Chars. UNKNOWN
    Number of Shafts 1
    1st Condition of Workings OPEN
    Capacity 1200
    Capacity Units MT ORE/DAY
    Unit Production Cost 22.17
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1984

Comments on other economic factors

  • THE DORE BULLION IS SENT TO THE ROYAL CANADIAN MINT, FOR REFINEMENT.
  • THE DILUTION OF THE ORE IS 10%. "U2" IS THE TECK MINE FOR THE EAST ZONE, AND "U1" IS THE MINE FOR THE QUARTER CLAIM OF THE EAST ZONE.

Reference information

Bibliographic references

  • Reserve-Resource

    CANADIAN MINING JOURNAL. HENLO GOLD DECISION NEAR. JUNE

  • Reserve-Resource

    1982, P. 47.

  • Reserve-Resource

    CANADIAN MINES HANDBOOK, 1989-90, P. 130, 132.

  • Reserve-Resource

    CANADIAN MINES HANDBOOK, 1990-91, P. 136.

  • Reserve-Resource

    CANADIAN MINES HANDBOOK. 1991-92, P. 212, 370, 196.

  • Reserve-Resource

    INTERNATIONAL CORONA CORP. AR 1991. P.13.

  • Reserve-Resource

    CANADIAN MINES HANDBOOK, 1996-97, PP. 214-215, 408-409.

  • Reserve-Resource

    HOMESTAKE MINING COMPANY, 1996 FORM 10-K REPORT, P20.

  • Reserve-Resource

    TECK CORPORATION, 1996 ANNUAL REPORT, P10.

  • Deposit

    CANADIAN MINING JOURNAL. HEMLO GOLD DECISION NEAR. JUNE

  • Deposit

    1982, P. 47.

  • Deposit

    -----. THE GEOLOGY OF GOLD IN ONTARIO. ONTARIO GEOLOGICAL

  • Deposit

    SURVEY, MISCELLANEOUS PAPER 110, 1983, PP. 226-239.

  • Deposit

    NORTHERN MINER. ADDITIONAL ASSAYS REPORTED BY CORONA ON

  • Deposit

    HEMLO PROPERTY. AUG. 20, 1981, P. 3.

  • Deposit

    NORTHERN MINER. VARIOUS ARTICLES, SEPT 3, 1981, P. 4-5 &

  • Deposit

    JUNE 17, 1982.

  • Deposit

    NORTHERN MINER. TECK KEEPS LOW PROFILE IN HEMLO SO FAR.

  • Deposit

    JAN. 19, 1984, P. B38.

  • Deposit

    NORTHERN MINER. HEMLO SECOND TIME AROUND FOR TECK. JAN.

  • Deposit

    19, 1984, P. B15.

  • Deposit

    THE MINING JOURNAL, FEB. 21, 1997, V328, #8417, P10.

  • Deposit

    CANADIAN MINES HANDBOOK, 1990-91, P136. 12/31/89.

  • Deposit

    CANADIAN MINES HANDBOOK, 1996-97, PP. 214-215, 408-409.

General comments

Subject category Comment text
Deposit MINERALS ECONOMICS GROUP. ACTIVE CANADIAN GOLD MINES. 8/91. DAVID BELL ZONE.

Reporter information

Type Date Name Affiliation Comment
Reporter 23-JUL-97 Buckingham, David A. U.S. Bureau of Mines

Beyond USGS

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

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