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Hope Brook

Plant in Newfoundland, Canada with commodities Copper, Gold
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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. Production statistics
  10. Reserves and resources
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10157797
MAS/MILS ID 1220250009
Record type Site
Current site name Hope Brook
Alternate or previous names Hopebrook, Chetwynd

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -58.06566, 47.71657 (WGS84)
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Canada Newfoundland

Commodities

Commodity Importance
Copper Tertiary
Gold Primary

Nearby scientific data

Ore Body (1) -58.06566, 47.71657
ListMap

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1902
Mining method Open Stope - Sublevel
Year of first production 1992
Plant type Leach
Plant subcategory Hydromet
Milling method Hydrometallurgy Unspecified

Ownership information

  • Type Owner-Operator
    Owner Royal Oak Mines Inc.
    Interest 100
    Home office Canada
    Year 1996

Production statistics

  • Year 1987
    Description Ore Production 160000 Mt Ore
  • Year 1989
    Description 4.51 G Au Feed Grade 737091 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 737091mt
  • Year 1990
    Description 4.45 G Au Feed Grade 859364 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 859364mt
  • Year 1994
    Description Ore Milled 1113239 Mt/Yr
  • Year 1994
    Description Gold Production 90672 T Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 2820214.82g
  • Year 1995
    Description Ore Milled 989058 Mt/Yr
  • Year 1995
    Description Gold Production 81962 T Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 2548370.4g

Comments on the production information

  • OPERATED BETWEEN 1987 TO 1991: REOPENED 1992; MILL TEMP SHUT 1996:
  • EXPECTED ANNUAL OUTPUT AT FULL CAPACITY (1989/1990?) APPROX. 130,000 OZ.AU/YR.

Reserves and resources

  • Type In-situ
    Estimate year 1990
    Demonstrated 9719000mt ore
    Total resources 9719000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.81 g/mt Gold Major 1990
  • Type In-situ
    Estimate year 1990
    Demonstrated 762000mt ore
    Total resources 762000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.2 g/mt Gold Major 1990
  • Type In-situ
    Estimate year 1990
    Demonstrated 10481000mt ore
    Total resources 10481000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.69 g/mt Gold Major 1990
  • Type In-situ
    Estimate year 1992
    Demonstrated 6699561mt ore
    Total resources 6699561mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.977 g/mt Gold Major 1992
  • Type In-situ
    Estimate year 1992
    Inferred 2721555mt ore
    Total resources 2721555mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.223 g/mt Gold Major 1992
  • Type In-situ
    Estimate year 1993
    Demonstrated 7489000mt ore
    Total resources 7489000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.57 g/mt Gold Major 1993
  • Type In-situ
    Estimate year 1993
    Inferred 2718000mt ore
    Total resources 2718000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.84 g/mt Gold Major 1993
  • Type In-situ
    Estimate year 1996
    Demonstrated 2220778mt ore
    Total resources 2220778mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.02 g/mt Gold Major 1996
  • Type In-situ
    Estimate year 1995
    Demonstrated 3592452mt ore
    Total resources 3592452mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.46 g/mt Gold Major 1995

Comments on other economic factors

  • OPEN PIT/HEAP LEACH OPERATION TO BE DEVELOPED FIRST (START BY AUGUST,1987) WITH 3,000 MTPD UG MINE AND CONVENTIONAL VAT LEACH MILL IN OPERATION BY LATE 1988.

Reference information

Bibliographic references

  • Reserve-Resource

    CANADIAN MINES HANDBOOK, 1991-92, PAGE 200.

  • Reserve-Resource

    CANADIAN MINES HANDBOOK, 1992-93, PAGE 317.

  • Reserve-Resource

    THE NORTHERN MINER, "ROYAL OAK TO REOPEN HOPE BROOK WITH

  • Reserve-Resource

    GOVERNMENT LOANS, CONCESSIONS", MAY 11, 1992, PAGE 13.

  • Reserve-Resource

    ROYAL OAK MINES LTD., 1992 ANNUAL REPORT, PAGE 19.

  • Reserve-Resource

    E & MJ, AUG 1992, "ROYAL OAK MINES...", P16CC.

  • Reserve-Resource

    CANADIAN MINES HANDBOOK, 1996-97, PP. 375, 473.

  • Deposit

    MINERALS ECONOMICS GROUP, "CURRENT LATE-STAGE CANADIAN GOLD

  • Deposit

    PROJECTS", JUNE 1992. PP. 223-228.

  • Deposit

    CANADIAN MINING JOURNAL, FEB. 87, P29.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-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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