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Trojan

Producer in Zimbabwe with commodities Nickel, Copper, Cobalt
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Ownership information
  17. Production statistics
  18. Reserves and resources
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10079576
MRDS ID W029608
Record type Site
Current site name Trojan

Geographic coordinates

Geographic coordinates: 31.33465, -17.29706 (WGS84)
Elevation 1530
Relative position 6 MILES SOUTH OF BINDURA, ABOUT 40 MILES NE OF SALISBURY

Site location context

Political divisions (FIPS codes)

Zimbabwe(country)

Africa(continent)

Land(continent)

Geographic areas

Country
Zimbabwe

Commodities

Commodity Importance
Nickel Critical Primary
Copper Primary
Cobalt Critical Tertiary

Materials information

Materials Type of material
Ilmenite Ore
Magnetite Ore
Millerite Ore
Pentlandite Ore
Pyrrhotite Ore

Alteration

  • (Local) Serpentinization

Mineral occurrence model information

Model code 11
USGS model code 6a
Deposit model name Komatiitic Ni-Cu

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
    Rock unit name Ultramafics
    Rock description Ultramafics
    Stratigraphic age (youngest) Neoarchean
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Komatiite (Ultramafite)
    Rock unit name Shamvaian Formation;Bulawayan Formation
    Rock description Shamvaian Formation;Bulawayan Formation

Nearby scientific data

(1) 31.33465, -17.29706
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Archaean Greenstone Belt, Precambrian Mafic And Ultramafic Rocks In A Cratonic Environment
Type of structure Local
Structure description Traverse Faults Trend Obliquely Across The Ultrabsic Rocks, Quartz Diorite Stock Intrusive Into Precambrian Bulawan Greenstones, Of Bulawan System. The Rocks Are Isoclinaly Folded.Faults.

Ore body information

  • General form TABULAR
    Dip 83 DEG.N
    Plunge direction NE
    Length 274M
    Width 73.15M
    Depth to bottom 360M

Controls for ore emplacement

  • Archaean Greenstone Belt, Ultrabasics

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1957
Discoverer Hilton A.J.
Year of first production 1968

Mining district

District name Harare (Salisbury) District

Ownership information

  • Type Operator
    Owner Trojan Nickel Mine Ltd (1965 Anglo American Option To 85 %)
  • Type Owner
    Owner Rhonickel

Production statistics

  • Year 1969
    Period Until 1969
    Material ORE
    Description Cp_Grade: ^0.583% Ni, 0.211% Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Copper Copper 0wt-pct
    Ore Nickel Nickel 1wt-pct
  • Year 1971
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^0.92% Ni
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Nickel Nickel 1wt-pct
  • Year 1976
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^0.68% Ni (Milled Ore)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Nickel Nickel 1wt-pct
  • Year 1979
    Period 1968-1979
    Material ORE
    Description Cp_Grade: ^0.7% Ni
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Nickel Nickel 1wt-pct
  • Year 1981
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^0.60% Ni
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Nickel Nickel 1wt-pct

Reserves and resources

  • Type In-situ
    Estimate year 1981
    Total resources 10400000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.71 wt-pct Nickel Major 1981
  • Type In-situ
    Estimate year 1982
    Total resources 12650000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.67 wt-pct Nickel Major 1982
  • Type In-situ
    Estimate year 1972
    Total resources 86000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.95 wt-pct Nickel Major 1972

Workings at the site

  • Type of workings Underground
    Length 762M

Reference information

Bibliographic references

  • Deposit

    PETERS H.D., NICKEL,1975

  • Deposit

    ROEX D.H.LE, NICKEL DEPOSIT ON THE TROJAN CLAIMS, BINDURA DISTRICT, S. RHODESIA

  • Deposit

    SCALLAN R.J., TROJAN NICKEL, VEIL IS LIFTED ON BIG BINDURA OPERATIONS.

  • Deposit

    DEYOUNG AND OTHERS, 1985, INTERNATIONAL STRATEGIC MINERALS INVENTORY SUMMARY REPORT-- NICKEL: U.S. GEOLOGICAL SURVEY CIRCULAR 930-D, 62 P.

  • Production

    DEYOUNG AND OTHERS, 1985

General comments

Subject category Comment text
Deposit MINE AND CONCENTRATOR; THE SUCCESSION UNDERLAYING THE CLAIMS THAT COMPRISE THE PROPERTY BELONG TO THE BULAWAYAN AND SHAMVARIAN SYSTEMS, VOLCANICS AND SEDIMENTARY ROCKS BOUNDED BY GRANITE AND GNEISS. INTRUDED IN THESE FORMATIONS ARE A NUMBER OF SILL-LIKE BODIES OF PERIDOTITE NOW ALTERED TO SERPENTINITE. NICKEL CONCENTRATIONS, IN SULFIDE MINERALS, OCCUR IN SERPENTINITE AT LOW LOCALITIES, CARDIFF HILL AND TROJAN HILL. CARDIFF HILL CONTAINS THE PRINCIPAL DEPOSITS, AND HERE MOST OF THE SULFIDE MINERALS ARE DISSEMINATED IN SHEARED SERPENTINITE BUT APPEAR TO HAVE BEEN REMOBILISED ON THE FOOTWALL CONTACT WERE VCKEL AND COPPER CATHODES AND COBALT SLUDGE THERE ARE NO PUBLISHED FIGURES AVAILABLE FOR THE INDIVIDUAL MINES OUTPUT. THE CONCENTRATOR IS DESIGNED TO TREAT 50 000 SHORT TONS OF ORE A MONTH.THE NI WILL BE RECOVERED BY CONVENTIONAL FROTH FLOTATION INTO A CONCENTRATE CONTAINING 15 % NI.
Deposit SHAFT TO 770 FEET DEPTH. THERE ARE THREE OREBODIES. THE HANGING WALL OREBODY, THE MAIN OREBODY, AND THE FOOTWALL OREBODY. THE FIRST TWO ARE MASSIVE DEPOSITS AND CONTAIN THE BULK OF THE ORE POTENTIAL.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1977 Saam, Henning G. U.S. Geological Survey
Updater 01-FEB-1988 Orris, Greta J. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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