Murray Brook

Producer in New Brunswick, Canada with commodities Copper, Gold, Lead, Silver, Zinc
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. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10167407
MAS/MILS ID 1220200018
Record type Site
Current site name Murray Brook

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -66.43005, 47.52523 (WGS84)

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
Gold Secondary
Lead Secondary
Silver Secondary
Zinc Critical Secondary

Nearby scientific data

Ore Body (1) -66.43005, 47.52523

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Significant Yes
Mining method Open Pit
Year of first production 1989
Milling method Hydrometallurgy Unspecified

Ownership information

  • Type Owner-Operator
    Owner Novagold Resources Inc.
    Interest 100
    Home office Canada
    Year 1991

Production statistics

  • Year 1990
    Description 2.02 G Au, 48.80 G Ag 390662 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Ore Silver Silver 49g/mt
    Trace Ore Gold Gold 2g/mt
  • Year 1991
    Description 1.88 G Au, 49.18 G Ag 415967 Mt Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Ore Silver Silver 49g/mt
    Trace Ore Gold Gold 2g/mt

Comments on the production information

  • DESCRIPTION SHOWS MILL FEED GRADES.

Reserves and resources

  • Type In-situ
    Estimate year 1978
    Indicated 21500000mt ore
    Demonstrated 21500000mt ore
    Total resources 21500000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.48 wt-pct Copper Major 1978
    Lead Pb 0.86 wt-pct Lead Minor 1978
    Zinc Zn 1.95 wt-pct Zinc Minor 1978
    Silver Ag 31.2 g/mt Silver Minor 1978
    Gold Au 0.2999 g/mt Gold Minor 1978
  • Type In-situ
    Estimate year 1990
    Demonstrated 1700000mt ore
    Total resources 1700000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.51 g/mt Gold Minor 1990
    Silver Ag 65.5 g/mt Silver Minor 1990
  • Type In-situ
    Estimate year 1997
    Demonstrated 436455mt ore
    Total resources 436455mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 2.93 wt-pct Copper Major 1997
    Silver Ag 40 g/mt Silver Minor 1997

Comments on the reserve resource information

  • COPPER ZONE RESERVES (1,300,000 @ 1.88 % CU & 46.0 GM AG)

Reference information

Bibliographic references

  • Reserve-Resource

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

  • Reserve-Resource

    1979, P.122, 232.

  • 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.20.

  • Reserve-Resource

    NORTHERN MINER, 3/25/91, B15.

  • Reserve-Resource

    CANADINA MINES HANDBOOK, 1996-97, PP. 321, 503.

  • Deposit

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

  • Deposit

    MINERAL DEPOSITS IN CANADA THAT ARE NOT BEING MINED;

  • Deposit

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

  • Deposit

    P.12, A45.

  • Deposit

    CANADIAN MINES HANDBOOK, 1990-91, P340.

  • Deposit

    MR 223, 1989, NB-39, 12/31/89.

General comments

Subject category Comment text
Deposit GOLD PRODUCTION STARTED 9/89; DEPLETED 1992: COPPER PRODUCTION STARTED 1992/ CLOSED WINTER 1992.

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.