1. Mineral Resources
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  3. Mineral Resource Data System (MRDS)

Half Mile Lake

Prospect in New Brunswick, Canada with commodities Copper, Lead, Silver, Zinc
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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. Land status
  13. Ownership information
  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 10157725
MAS/MILS ID 1220200016
Record type Site
Current site name Half Mile Lake

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -66.30755, 47.41663 (WGS84)
Elevation 330
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Campbellton(quadrangle 1:250,000 scale)

Geographic areas

Country State
Canada New Brunswick

Commodities

Commodity Importance
Copper Primary
Lead Primary
Silver Secondary
Zinc Critical Primary

Materials information

Materials Type of material
Chalcopyrite Unknown
Galena Unknown
Pyrite Unknown
Sphalerite Unknown

Nearby scientific data

Ore Body (1) -66.30755, 47.41663
ListMap

Economic information

Ore body information

  • Length 200M
    Depth to top 600M
    Field Value
    Type of Orebody #1 MASS SULFIDE
    Shape of Orebody #1 LENTICULAR
    Primary mode of Origin CONT METASOMATIC
    Primary Ore Control BEDDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Minimum Depth to Top 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830713

Comments on the geologic information

  • THE DEPOSIT IS CONFORMABLE TO THE HOST ROCKS COMPOSED OF LAYERED VOLCANICS AND COURSE SEDIMENTS INTERLAYERED WITH THE VOLCANIC SEQUENCE. ROCK TYPES INCLUDE METAMORPHOSED SILTSTONE, ARGILLITE, MAFIC AND FELSIC VOLCANICS AND SHEET-LIKE BODIES OF PORPHRY.

Economic information about the deposit and operations

Operation type Underground
Development status Prospect
Commodity type Metallic
Significant Yes
Discovery year 1955
Mining method Filled Stopes - Horiz Cut and Fill W/Tailings
Milling method Flotation

Mining district

District name Bathurst-Newcastle District

Mineral rights holdings

Type of mineral rights Unknown

Land status

Ownership category Unknown

Ownership information

  • Type Owner
    Owner Texasgulf Inc.
    Interest 90
    Home office Canada
    Year 1981
  • Type Owner
    Owner Bay Copper Mines Ltd.
    Interest 10
    Year 1981

Comments on the production information

  • NOT ENOUGH INFORMATION IS AVAILABLE TO DETERMINE THE METALLURGICAL FLOWSHEET. THE COPPER CONTENT OF THE ORE MAY BE TOO LOW TO ENCOURAGE PRODUCTION OF A SEPARATE COPPER CONCENTRATE. MAFO ETD REPORTS MILL RECOVERY AND CONCENTRATE GRADE OF COPPER AS, 40 PCT AND 1.2 PCT, RESPECTIVELY. THE COPPER CONCENTRATE MAY GO TO TIMMINS SMELTER, ONTARIO. MILL TO SMELTER TRANSPORTATION COST WOULD BE $45/MT MILL OUTPUT.

Reserves and resources

  • Type In-situ
    Estimate year 1972
    Indicated 590000mt ore
    Demonstrated 590000mt ore
    Total resources 590000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 6.01 wt-pct Zinc Major 1972
    Lead Pb 0.79 wt-pct Lead Major 1972
    Copper Cu 0.44 wt-pct Copper Major 1972

Comments on the reserve resource information

  • DATA NOT RECENT.
  • 81 PAH REPORT 13,600,000 MT RESERVES 1-86

Workings at the site

  • Type of workings Underground
    Overall depth 1200M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method HORIZ CUT & FILL W/WASTE ROCK 10-60
    Percent Recovery 100
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. UNKNOWN
    Number of Shafts 1
    1st Condition of Workings NO MINE ENTRY
    Capacity 4200
    Capacity Units MT ORE/DAY
    Unit Production Cost 11.24
    Units of Production $/MT ORE
    Operating Days per Year 238
    Year of Information 1981

Reference information

Bibliographic references

  • 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.11.

  • Deposit

    BILLITON PREPARING MT. PLEASANT TUNGSTEN MINE, OCT. 2, 1980,

  • Deposit

    THE NORTHERN MINER, P. 2.

  • Deposit

    DEPT. OF NAT. RES., JAN., 1981, HALFMILE LAKE SULFIDE

  • Deposit

    DEPOSIT, NEW BRUNSWICK.

  • Deposit

    HARLEY, D.N., 1979, A MINERALIZED ORDOVICIAN RESURGENT

  • Deposit

    CALDERA COMPLEX IN THE BATHURST-NEWCASTLE MINING DISTRICT,

  • Deposit

    NEW BRUNSWICK, CANADA, ECON. GEOL., VOL. 74, P. 786-796.

  • Deposit

    POTTER, R.R., APR. 1975, EXPLORATION ACTIVITY IN NEW

  • Deposit

    BRUNSWICK 1974, WESTERN MINER, P. 41-48.

  • Deposit

    TEXASGULF, ANNUAL REPORT, 1976.

General comments

Subject category Comment text
Deposit WIDTHS RANGE FROM 0 TO 20 M. AND THE DEPOSIT PINCHES AND SWELLS. THE ZONE FROM A DEPTH OF 700 TP 1000M. SHOWS THE MOST PROMISE FOR A MAJOR ORE DEPOSIT.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-84 Eastern Field Operations Center (EFOC) 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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