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  3. Mineral Resource Data System (MRDS)

Terra Operations

Producer in Northwest Territories, Canada with commodities Bismuth, Cobalt, Copper, 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. Nearby scientific data
  7. Economic information about the deposit and operations
  8. Ownership information
  9. Reserves and resources
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10181901
MAS/MILS ID 1220300010
Record type Site
Current site name Terra Operations
Alternate or previous names Terra Mine, Silver Bear Mine, North Mine, Norex Mine

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -118.11849, 65.60016 (WGS84)

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Canada Northwest Territories

Commodities

Commodity Importance
Bismuth Critical Secondary
Cobalt Critical Secondary
Copper Secondary
Silver Primary

Nearby scientific data

Ore Body (1) -118.11849, 65.60016
ListMap

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant No
Mining method Shrinkage Methods

Ownership information

  • Type Operator
    Owner Terra Mining And Exploration Ltd.
    Interest 100
    Home office Canada
    Year 1979
  • Type Owner
    Owner Terra Mining And Explloration Ltd.
    Interest 88
    Home office Canada
    Year 1979
  • Type Owner
    Owner Harter, A.
    Interest 12
    Home office Canada
    Year 1979

Reserves and resources

  • Type In-situ
    Estimate year 1978
    Measured 16500mt ore
    Demonstrated 16500mt ore
    Total resources 16500mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 1166 g/mt Silver Major 1978
    Copper Cu 0.2 wt-pct Copper Minor 1978
  • Type In-situ
    Estimate year 1978
    Measured 14800mt ore
    Demonstrated 14800mt ore
    Total resources 14800mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 1132 g/mt Silver Major 1978
    Copper Cu 0.2 wt-pct Copper Minor 1978
  • Type In-situ
    Estimate year 1978
    Measured 6000mt ore
    Demonstrated 6000mt ore
    Total resources 6000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 1406 g/mt Silver Major 1978
    Copper Cu 0.2 wt-pct Copper Minor 1978
  • Type In-situ
    Estimate year 0
    Demonstrated 190000mt ore
    Total resources 190000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 1036.9767 g/mt Silver Major 0

Reference information

Bibliographic references

  • Production

    SHAEDE, D.A., L.J. MANNING AND R.L. ROSCOE, TERRA MINING AND

  • Production

    EXPLORATION, LIMITED- SILVER BEAR MILL; D.E. PICKETT,ED.,

  • Production

    IN MILLING PRACTICE IN CANADA, CIM SPECIAL VOLUME 16,

  • Production

    1978, P.76-78.

  • 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.19.

  • Deposit

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

  • Deposit

    1979, P.273,274.

  • Deposit

    WESTERN MINER, TERRA CONTINUES PRODUCTION DESPITE MISFORTUNE

  • Deposit

    SEPT., 1972, P.

  • Deposit

    WESTERN MINER, TERRA OPERATION IMPROVED, MAY, 1973, P.46.

  • Deposit

    WESTERN MINER, SILVER SHINES AT CAMSELL RIVER SITE OF TERRA

  • Deposit

    MINING AND EXPLORATION, OCT., 1974, P.31,32.

  • Deposit

    NORTHERN MINER, RECORD PRODUCTION OF SILVER BOOSTS TERRA

  • Deposit

    MINING PROFIT, SEPT. 14, 1978, P.19.

  • Deposit

    NORTHERN MINER, NOREX RESOURCES, JOINT VENTURE IS PROFITABLE

  • Deposit

    OCT. 19, 1978, P.A23.

  • Deposit

    NORTHERN MINER, NOREX MINE DRILL RESULTS PROVIDE ENCOURAGE-

  • Deposit

    MENT, JAN. 4, 1979, P.20.

  • Deposit

    NORTHERN MINER, SILVER PRODUCTION AT TERRA MINING GAINED 28%

  • Deposit

    JAN. 18, 1979, P.A28.

  • Deposit

    NORTHERN MINER, TERRA BULLISH ON SILVER PRODUCTION IN BOTH

  • Deposit

    NORTHERN CANADA AND MEXICO, JUNE 21, 1979, P.A24.

  • Deposit

    NORTHERN MINER, TERRA SEEKS FINANCING FOR DEVELOPMENT WORK,

  • Deposit

    AUG. 23, 1979, P.27.

  • Deposit

    NORTHERN MINER, NOREX AND TERRA CONTINUE WORK ON CAMSELL

  • Deposit

    RIVER SILVER MINE, JULY 19, 1979, P.A8.

  • Deposit

    NORTHERN MINER, TERRA DRILLS IN NEW VEIN N.W.T. MINE,

  • Deposit

    OCT. 4, 1979, P.4.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-SEP-1996 Porter, Kenneth E. 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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