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  3. Mineral Resource Data System (MRDS)

Detour Lake

Plant in Ontario, 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. 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 10303216
MAS/MILS ID 1220400111
Record type Site
Current site name Detour Lake

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -79.70531, 50.0139 (WGS84)
Elevation 300
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
Copper Secondary
Gold Primary
Silver Tertiary

Materials information

Materials Type of material
Chalcopyrite Unknown
Chlorite Unknown
Pyrite Unknown
Quartz Unknown
Talc Unknown

Nearby scientific data

Ore Body (1) -79.70531, 50.0139
ListMap

Economic information

Ore body information

  • 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 FRACTURING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Date of Last Modification 861204

Comments on the geologic information

  • THREE ORE TYPES WILL BE MINED AT DETOUR. THESE ARE: (1) A CHERT ZONE OF INTENSE FRACTURING, HIGH SULFIDE, QUARTZ AND GOLD CONTENT; (2) A TALL-CARBONATE ZONE IN THE FOOTWALL OF THE CHERT ZONE, AND (3) QUARTZ FRACTURE ZONES FOUND IN FELSIC AND BASALTIC UNITS IN THE HANGING WALL OF THE CHERT.
  • THE GOLD MINERALIZATION IS CONCENTRATED WITHIN AND ADJACENT TO A CHERTY-TUFF HORIZON, WHICH LIES ON THE NORTH END OF AN EAST-WEST STRIKING ANTICLINE.

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1974
Mining method Filled Stopes
Year of first production 1983
Plant type Leach
Plant subcategory Hydromet
Milling method Hydrometallurgy Unspecified

Mining district

District name Larder Lake Mining District

Mineral rights holdings

Type of mineral rights Located Claim
Type of mineral rights Federal Lease

Ownership information

  • Type Owner-Operator
    Owner Placer Dome Inc. (Placer Dome Canada Ltd.)
    Interest 100
    Home office Canada
    Year 1997

Production statistics

  • Year 1986
    Description 3.6g Au 785455 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 785455mt 4g/mt
  • Year 1988
    Description 4.5g Au 636364 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 636364mt 5g/mt
  • Year 1989
    Description 5.3g Au 818416 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 818416mt 5g/mt
  • Year 1990
    Description 5.0g Au 1000000 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1000000mt 5g/mt

Comments on the production information

  • DESCRIPTION SHOWS MILL FEED GRADES.

Reserves and resources

  • Type In-situ
    Estimate year 1980
    Demonstrated 9000000mt ore
    Total resources 9000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 6.99 g/mt Gold Major 1980
  • Type In-situ
    Estimate year 1992
    Demonstrated 5896703mt ore
    Total resources 5896703mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 5.38 g/mt Gold Major 1992
  • Type In-situ
    Estimate year 1993
    Demonstrated 5685000mt ore
    Total resources 5685000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 5.31 g/mt Gold Major 1993
  • Type In-situ
    Estimate year 1993
    Demonstrated 274000mt ore
    Total resources 274000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 7.51 g/mt Gold Major 1993
  • Type In-situ
    Estimate year 1995
    Demonstrated 3191000mt ore
    Total resources 3191000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 4.9 g/mt Gold Major 1995
  • Type In-situ
    Estimate year 1997
    Demonstrated 1921000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 4.7 g/mt Gold Major 1997
  • Type In-situ
    Estimate year 1997
    Demonstrated 532000mt ore
    Total resources 532000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 7.9 g/mt Gold Major 1997
  • Type In-situ
    Estimate year 1997
    Measured 1921000mt ore
    Indicated 532000mt ore
    Demonstrated 2453000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 5.396 g/mt Gold Major 1997
  • Type In-situ
    Estimate year 1992
    Demonstrated 5896703mt ore
    Total resources 5896703mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 5.38 g/mt Gold Major 1992

Comments on the reserve resource information

  • RESOURCES RECORE "R" 8 TOTAL OF RECORDS "R" 6 & 7 TOTAL DEMON ORE RESOURCES, 12/31/96:
  • TOTAL DEMON. ORE; AS OF 12/31/96; FROM RESOURCES RECORD "R" 8 TOTAL. PRODUCTION DATA AVG OF 1995, 1996 DATA
  • Q-MATRIX DATA USED IN THE 1982 AU STUDY. Q-MATRIX 1 COLUMN 3 DATA FOR THE 1993 CANADIAN AU STUDY. SILVER DATA BASED ON AG/AU RATIO FROM Q-MARTIXD 1 COLUMN 1.

Workings at the site

  • Type of workings Surface
    Area 18HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method BENCH (BERM)
    Percent Waste Rock 75
    Primary Material Cover SAND, GRAVEL
    Hardness of Ore SAND, GRAVEL
    Avg. Bench Height (meters) 10
    Max. Pit Slope (degrees) 45
    Capacity 4200
    Capacity Units MT ORE/DAY
    Unit Production Cost 13.56
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1982
  • Type of workings Underground
    Overall depth 565M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    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 5600
    Capacity Units MT ORE/DAY
    Unit Production Cost 18.94
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1982

Comments on other economic factors

  • THE DILUTION OF THE ORE IS 5%. THE METHOD OF MINING USED AT DETOUR IS TRANSVERSE BLAST- HOLE.
  • THE DORE BULLION IS SHIPPED TO THE ROYAL CANADIAN MINT FOR REFINEMENT VIA BRINKS SECURITY TRUCKS.
  • THE DILUTION OF THE ORE AT THE OPEN PIT IS 15%.
  • THE DEVELOPMENT SCHEDULE IS PARTITIONED, DUE TO CHANGING ORE FEED GRADES OF GOLD, SILVER, AND COPPER. THIS CHANGE IS MOST LIKELY DUE TO THE SCHEDULED CHANGE OF MINING METHODS, FROM SURFACE (DEPLETED IN 1986) TO UNDERGROUND (STARTING IN 1987).

Reference information

Bibliographic references

  • Reserve-Resource

    CANADIAN MINING JOURNAL, P. 97, FEB. 1980.

  • Reserve-Resource

    PLACER DOME INC. AN RPT, 1991, PAGE 15.

  • Reserve-Resource

    PLACER DOME INC. AN RPT, 1992, PAGE 12.

  • Reserve-Resource

    PLACER DOME INC. PRESS RELEASE, 2/22/93, PAGE 3.

  • Reserve-Resource

    CANADIAN MINES HANDBOOK, 1996-97, PP. 342-343.

  • Reserve-Resource

    PLACER DOME INC. 1996 FORM 40-F, PP. 14, 15.

  • Deposit

    DETOUR LAKE PROJECT, DEFINING A MAJOR GOLD MINING

  • Deposit

    OPERATION. PAPER BY K.J. HILL, PROJECT MANAGER, PRESENTED

  • Deposit

    AT THE CANADIAN INSTITUTE OF MINING AND METALLURGY, THIRD

  • Deposit

    ANNUAL DISTRICT 2 MEETING, VAL D'OR, QUEBEC, CANADA,

  • Deposit

    SEPTEMBER 27-30, 1981.

  • Deposit

    CANADIAN MINES HANDBOOK, PP. 68-69, 1981-82.

  • Deposit

    CANADIAN MINING JOURNAL, P. 13, MARCH 1981.

  • Deposit

    NORTHERN MINER, MAY 8, 1980 AND APRIL 10, 1980.

  • Deposit

    MINING MAGAZINE, JANUARY 1977.

  • Deposit

    WORLD MINING, JULY 1978.

  • Deposit

    SKILLINGS, DECEMBER 1979.

  • Deposit

    ANNUAL REPORT, DOME MINES LTD., 1980.

  • Deposit

    ANNUAL REPORT, RED LAKE MINES LTD., 1980.

  • Deposit

    THE MINING JOURNAL, V 328, #8417, FEB. 21, 1997, P10.

  • Deposit

    CANADIAN MINES HANDBOOK, 1996-97, PP. 342-343.

  • Deposit

    PLACER DOME INC. 1996 FORM 40-F, PP. 13, 14, 15, 16, 18.

General comments

Subject category Comment text
Deposit DUE TO GO UNDERGROUND IN EARLY 1987 (E.B.,4/28/1987).

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.

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:

  • Placer Dome Inc. (Placer Dome Canada Ltd.) — acquired by Subsidiary of Barrick Gold (2006)
    Acquired by Barrick Gold in 2006.

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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