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Geco

Producer in Ontario, Canada with commodities Copper, Gold, Sulfur-Pyrite, Lead, Silver, Zinc
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Geologic information

Identification information

Deposit ID 10181511
MAS/MILS ID 1220400005
Record type Site
Current site name Geco
Alternate or previous names Geco Mine, Noranda Geco

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -85.78885, 49.15561 (WGS84)
Elevation 300
Location accuracy 1000(meters)
(click for info)

Geographic areas

Country State
Canada Ontario

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Sulfur-Pyrite Tertiary
Lead Primary
Silver Primary
Zinc Primary

Materials information

Materials Type of material
Chalcopyrite Unknown
Galena Unknown
Gold Unknown
Marcasite Unknown
Pyrite Unknown
Pyrrhotite Unknown
Silver Unknown
Sphalerite Unknown

Nearby scientific data

Ore Body (1) -85.78885, 49.15561
ListMap

Ore body information

  • Strike N82W
    Dip 90
    Thickness 150M
    Depth to top 230M
    Width 20M
    Length 760M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 SERICITIC
    Strike And Dip N82W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 10
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 810330
  • Area 175HA
    Field Value
    Total Surface Area (HA) 175
    Date of Last Modification 910418

Comments on the geologic information

  • THE HOST ROCK FOR THE MASSIVE SULFIDES IS A QUARTZ MUSCOVITE SCHIST, PARTICULARLY IN AREAS OF FAULT BRECCIATION. THE SERICITIC QUARTZITE IS THE HOST ROCK FOR THE DISSEMINATED SULFIDES AND LIES BELOW AND ALONG THE MASSIVE SULFIDE ZONE.
  • THE SILVER MINERAL HAS NEVER BEEN IDENTIFIED, BUT IT IS SUSPECTED THAT THE SILVER MAY BE IN SOLID SOLUTION WITH CHALCOPYRITE.

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1953
Mining method Open Stope - Other Open Stope Methods
Year of first production 1970
Milling method Flotation

Mining district

District name Thunder Bay District

Mineral rights holdings

Type of mineral rights Patented
Type of mineral rights Federal Lease

Ownership information

  • Type Operator
    Owner Noranda Minerals Inc.
    Home office Canada
    Year 1990
  • Type Owner
    Owner Noranda Inc.
    Interest 100
    Home office Canada
    Year 1990

Production statistics

  • Year 1970
    Description 1588000 Mt Ore/Yr
  • Year 1971
    Description 1588000 Mt Ore/Yr
  • Year 1972
    Description 1588000 Mt Ore/Yr
  • Year 1973
    Description 1588000 Mt Ore/Yr
  • Year 1974
    Description 1588000 Mt Ore/Yr
  • Year 1975
    Description 1599000 Mt Ore/Yr
  • Year 1976
    Description 1530000 Mt Ore/Yr
  • Year 1977
    Description 1592000 Mt Ore/Yr
  • Year 1978
    Description 1572000 Mt Ore/Yr
  • Year 1979
    Description 1475000 Mt Ore/Yr
  • Year 1980
    Description 1358000 Mt Ore/Yr
  • Year 1981
    Description 1330000 Mt Ore/Yr
  • Year 1982
    Description 1351000 Mt Ore/Yr
  • Year 1983
    Description 1247000 Mt Ore/Yr
  • Year 1984
    Description 1254000 Mt Ore/Yr
  • Year 1985
    Description 1305000 Mt Ore/Yr

Comments on the production information

  • IN 1932, THE ONTARIO DEPT. OF MINES PUBLISHED A MAP SHOWING THE PRESENCE OF COPPER MINERALIZATION IN THE MINE AREA. NO FURTHER WORK WAS DONE UNTIL 1953 WHEN THE PROPERTY WAS STAKED. AFTER AN EVALUATION OF THE PROPERTY BY GENERAL ENGINEERING CO., GECO MINES LTD. WAS FORMED TO THOROUGHLY INVESTIGATE THE SHOWINGS. DURING THE WINTER OF 1953-54, DIAMOND DRILLING REVEALED THE EXISTENCE OF A MASSIVE SULFIDE OREBODY, WHICH WAS CONFIRMED BY THE SPRING OF 1954. IN JULY, 1954, THE MINING CORP. OF CANADA LTD. ASSUMED CONTROL OF GECO AND BEGAN PREPRODUCTION DEVELOPMENT. BY SEPT., 1957 THE PROPERTY WAS IN PRODUCTION. GECO MINES LTD. WAS AMALGAMATED WITH NORANDA MINES LTD. IN 1964.

Reserves and resources

  • Type In-situ
    Estimate year 1989
    Demonstrated 10,077,000mt ore
    Indicated 10,077,000mt ore
    Total resources 10,077,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.62 wt-pct Copper Major 1989
    Zinc Zn 2.94 wt-pct Zinc Major 1989
    Silver Ag 35.5 g/mt Silver Major 1989
  • Type In-situ
    Estimate year 1993
    Demonstrated 6,119,000mt ore
    Indicated 6,119,000mt ore
    Total resources 6,119,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.6 wt-pct Copper Major 1993
    Zinc Zn 2.8 wt-pct Zinc Major 1993
    Silver Ag 37.3 g/mt Silver Major 1993
  • Type In-situ
    Estimate year 1993
    Demonstrated 3,950,000mt ore
    Total resources 3,950,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 2.59 wt-pct Zinc Major 1993
    Silver Ag 41.06 g/mt Silver Major 1993

Comments on the reserve resource information

  • NORANDA INC., 1988 AR, P36. (12/31/88) CMH, 1987-88, P290. (12/31/86)
  • RESERVES ARE EXPECTED TO BE DEPLETED IN 1996.

Workings at the site

  • Type of workings Underground
    Overall depth 659M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OTHER FILLED STOPE METHODS
    Swell Factor .6
    Percent Waste Rock 16
    Percent Recovery 100
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. SUPPORTING
    Mine Support Chars. UNKNOWN
    Number of Shafts 4
    Length of Inclines (m) 0
    Slope of Inclines 0
    Avg. Length of Adits (m) 245
    Number of Adits 2
    1st Condition of Workings OPEN
    Capacity 4536
    Capacity Units MT ORE/DAY
    Unit Production Cost 9.63
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1980

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 1220400005

Bibliographic references

  • Reserve-Resource

    CANADIAN MINES HANDBOOK - 1979-80, 1980, P. 192.

  • Reserve-Resource

    CANADIAN MINES HANDBOOK 1986-87, NORTHERN MINER PRESS,P.282.

  • Reserve-Resource

    MINE RESERVES AND CURRENTLY PROMISING DEPOSITS, JAN. 1985,

  • Reserve-Resource

    EMR CANADA, MR 209, P. 18.

  • Reserve-Resource

    NORANDA MINERALS INC., 1989 ANNUAL REPORT, P, 9.

  • Reserve-Resource

    CANADIAN MINES HANDBOOK, 1992-1993, P-256.

  • Reserve-Resource

    AME MINERAL ECONOMICS QUARTERLY MINE ANALYSIS, JUNE 1993,

  • Reserve-Resource

    P. 43, 48.

  • Deposit

    GOLDER ASSOC., 1980, DEPOSIT PROFILE NORANDA MINES LTD.

  • Deposit

    (GECO DIVISION) ONTARIO, CANADA: CONFIDENTIAL REPORT

  • Deposit

    PREPARED FOR U.S. BUREAU OF MINES MINERALS AVIALABILITY

  • Deposit

    SYSTEM BY GOLDER ASSOC., CONSULTING MINING AND GEOTECH-

  • Deposit

    NICAL ENGINEERS, CONTRACT NO. J02950059, 12 P.

  • Deposit

    PABST, M., 1980, GECO ENTERS '80S WITH MILL UPDATE: CANAD.

  • Deposit

    MIN. JOUR., P. 32-42.

  • Deposit

    MARSHALL, G.M.T., 1959, BLASTHOLE MINING AT GECO: MINING

  • Deposit

    ENGINEERING, AUGUST, 1959, P. 797-802.

  • Deposit

    MCLEOD, P.C., AND SCHWARTZ, A., 1970, CONSOLIDATED FILL AT

  • Deposit

    NORANDA MINES LIMITED (GECO DIVISION): CIM BULL., SEPT.,

  • Deposit

    1970, P. 1011-1018.

  • Deposit

    BROOKS, L.S., AND BARNETT, C., 1978, NORANDA MINES LIMITED-

  • Deposit

    GECO DIVISION: CIM SPECIAL VOLUME NO. 16, P. 182-184.

  • Deposit

    BROWN, W.L., AND BRAY, R.C.E., 1960, THE GEOLOGY OF THE

  • Deposit

    GECO MINE: TRANSACTIONS OF CANADIAN INSTITUTE OF MINING

  • Deposit

    AND METALLURGY AND THE MINING SOCIETY OF NOVA SCOTIA,

  • Deposit

    VOL. 63, P. 1-9.

  • Deposit

    MCLEOD, P.C., 1958, THE UNDERGROUND PHASE OF THE GECO

  • Deposit

    PROJECT, SOME METHODS USED TO MEET A PRODUCTION DATE:

  • Deposit

    CIM BULL., VOL. 51, P. 616-623.

  • Deposit

    WAINWRIGHT, R.R., 1965, OPERATING EXPERIENCE WITH FRICTION-

  • Deposit

    TYPE HOISTS AT GECO MINES LIMITED: CIM BULL., VOL. 58,

  • Deposit

    P. 36-41.

  • Deposit

    HARVEY, W.M., HEAVY DUTY FRICTION HOISTING AT GECO MINES:

  • Deposit

    CIM BULL., VOL. 68, P. 315-320.

  • Deposit

    CANADIAN MINES HANDBOOK - 1979-80, P. 192.

  • Deposit

    ENGINEERING/MINING JOURNAL, 1978, INTERNATIONAL DIRECTORY

  • Deposit

    OF MINING: P. 243.

  • Deposit

    THOMSON, J.E., FERGUSON, S.A., JOHNSTON, W.G.Q., PYE, E.G.,

  • Deposit

    SAVAGE, W.S., AND THOMSON, R., 1957, COPPER, NICKEL, LEAD,

  • Deposit

    AND ZINC DEPOSITS IN ONTARIO: ONTARIO DEPT. OF MINES,

  • Deposit

    METAL RESOURCES CIRC. NO. 2, P. 49-50.

  • Deposit

    METALS SOURCE BOOK, 1973, PAGE UNKNOWN.

  • Deposit

    MINISTRY OF NATURAL RESOURCES ONTARIO, 1976, TOWARDS A ZINC

  • Deposit

    POLICY FOR THE PROVINCE OF ONTARIO: PAPER #3, MINERAL

  • Deposit

    POLICY BACKGROUND, P. 90.

  • Deposit

    CRANSTONE, D.A., AND WHILLANS, R.T., 1978, CANADIAN RESERVES

  • Deposit

    OF NICKEL, LEAD, ZINC, MOLYBDENUM, SILVER, AND GOLD AS OF

  • Deposit

    JAN. 1, 1978: P. 13.

  • Deposit

    MCLEOD, P.C., 1973, L.H.D. TRAINING AT THE GECO MINE:

  • Deposit

    CANADIAN MINING JOURNAL, SEPT., 1973, P. 6.

  • Deposit

    URBANOSKI, L., 1978, APPLICATION OF THE INAX ENERGY DISPER-

  • Deposit

    SIVE X-RAY ANALYSER ONSTREAM ANALYSIS AT GECO: CANADIAN

  • Deposit

    MINING JOURNAL, MARCH, 1978, P. 31-32.

  • Deposit

    MOOKHERJEE, A., AND DUTTA, N.K., 1970, EVIDENCE OF INCIPIENT

  • Deposit

    MELTING OF SULFIDES ALONG A DIKE CONTACT, GECO MINE,

  • Deposit

    MANITOUWADGE, ONTARIO: ECONOMIC GEOLOGY, VOL. 65, P. 706-

  • Deposit

    713.

  • Deposit

    DEPT. OF ENERGY, MINES AND RESOURCES OTTAWA, 1971, CANADIAN

  • Deposit

    MINERALS YEARBOOK: P. 127.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-MAR-97 Palencia, Cesar M. U.S. Bureau of Mines