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Trojan Mine

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. Host and associated rocks
  7. Nearby scientific data
  8. Geologic structures
  9. Economic information about the deposit and operations
  10. Mining district
  11. Ownership information
  12. Production statistics
  13. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10106775
MRDS ID ISM0233
Record type Site
Current site name Trojan Mine

Geographic coordinates

Geographic coordinates: 31.33465, -17.29706 (WGS84)
Elevation 1530
Relative position TOWN; 10 M

Site location context

Political divisions (FIPS codes)

Zimbabwe(country)

Africa(continent)

Land(continent)

Geographic areas

Country
Zimbabwe

Comments on the location information

  • 9 KM S OF BINDURA, ABOUT 64 KM NE OF HARARE.
  • GEOGRAPHIC COORDINATES FROM KUNYANG ARE SUBSTITUTED. A LOW MG-PHOSPHATE DEPOSIT WAS DISCOVERED IN 1985 AT DIANCHI (NAME OF A LAKE)

Commodities

Commodity Importance
Nickel Critical Primary
Copper Primary
Cobalt Critical Primary

Comments on the commodity information

  • PHOSPHATE

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Komatiite (Ultramafite)
    Rock unit name Bulawayan Group;Bulawayan Group;Bulawayan Group
    Rock description Bulawayan Group;Bulawayan Group;Bulawayan Group

Nearby scientific data

(1) 31.33465, -17.29706
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Magmatic Sulfide Segregations In Ultramafic Rocks

Comments on the geologic information

  • METAMORPHISM; PREC; PNLD + MLRT; PYTT; MGNT; ILMN; THE SUCCESSION UNDERLYING THE CLAIMS THAT COMPRISE THE PROPERTY BELONGS TO THE BULAWAYAN AND SHAMVAIAN SYSTEMS, VO-LCANIC AND SEDIMENTARY ROCKS BOUNDED BY GRANITE AND GNEISS. I-NTRUDED IN THESE FORMATIONS ARE A NUMBER OF SILL-LIKE BODIES N-OW ALTERED TO SERPENTINITE. NICKEL CONCENTRATIONS IN SULFIDE -MINERALS OCCUR IN SERPENTINITE AT TROJAN HILL, WITHIN THE BASA-LT UNITS OF THE UPPER GREENSTONES.
  • ; APATITE, QUARTZ; PHOSPHORITES AS GREY OR GREY-BROWN POORLY STRATIFIED HORIZONS NEAR THE BASE OF THE LEI-PO SUITE, WHICH OVERLIES TIENYING DOLOMITES. WEATHERING AND LEACHING PROCESSES HAVE IN MANY CASES CAUSED CONCENTRATION OF PHOSPHATE. UNWEATHERED ORE: 23-28 % P2O5; 37-42 % CAO; 13-19 % SIO2; 7-8.3 % CO2. WEATHERED ORE: 29-39 % P2O5; 39-50 % CAO; 1.5-5.7 % SIO2; 0.9-1.2 % CO2. TIENYING FORMATION=DENGYING FORMATION. THE ORE BODY OCCURS ON AN 2.3 KM LONG EAST-WEST STRIKE AND DIPS WITH 3-6 DEG. SOUTH

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1957
Year of first production 1968

Mining district

District name Salisbury (Harare) District

Ownership information

  • Type Owner-Operator
    Owner Rhodesian Nickel Corp. Ltd. (Rhonickel)

Production statistics

  • Year 1979
    Material ORE NI
    Accuracy Estimate
    Description Ap_Grade: ^0.92% Ni
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Nickel Nickel 1wt-pct
  • Year 1979
    Period Through 1979
    Material ORE NI
    Accuracy Estimate
    Description Cp_Grade: ^0.7% Ni
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Nickel Nickel 1wt-pct
  • Year 1980
    Material ORE NI
    Accuracy Accurate
    Description Ap_Grade: ^0.60% Ni
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Nickel Nickel 1wt-pct
  • Year 1981
    Material ORE NI
    Accuracy Accurate
    Description Ap_Grade: ^0.60% Ni
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Nickel Nickel 1wt-pct

Comments on the production information

  • UNKNOWN UNKNOWN
  • 3.5 MILLION TPY CAPACITY FROM 25 MINING OPERATIONS IN YUNNAN PROVINCE; LIANYUNGANG MINE HAS A CAPACITY OF 1.2 MIL ROM TPY (10 % P2O5), AND 300 000 TPY CONCENTRATE (32 % P2O5) WITH A P2O5 RECOVERY RATE OF 80 %

Reserves and resources

  • Type In-situ
    Estimate year 1972
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.95 wt-pct Nickel Major 1972
  • Type In-situ
    Estimate year 1973
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.75 wt-pct Nickel Major 1973
  • Type In-situ
    Estimate year 1980
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.68 wt-pct Nickel Major 1980
  • Type In-situ
    Estimate year 1981
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.71 wt-pct Nickel Major 1981

Comments on the reserve resource information

  • RR41: TOTAL ORE RESERVES (PROVEN, PROBABLE, POSSIBLE)
  • SEE FOR KUNMING

Comments on development

  • NON-GEOLOGIC CONSTRAINTS ON DEVELOPMENT OR EXPANSION IN 1-5 YRS. (). DEVELOPMENT(YES); PRODUCT CONCENTRATED AT TROJAN MILL TO NI-CU-CO MIXTURE OF GRADE 11% NI, 1.8% CU, AND .009% CO.
  • NON-GEOLOGIC CONSTRAINTS ON DEVELOPMENT OR EXPANSION IN 1-5 YRS. (). DEVELOPMENT(UNKNOWN); EXPLORATION(UNKNOWN);

Reference information

Bibliographic references

  • Deposit

    SHEKARCHI, E., MORGAN, G., CLARKE P. AND AMBROSIO, S., 1981, ZIMBABWE: U.S. BUREAU OF MINES, MINERAL PERSPECTIVES- SERIES, WASHINGTON, DC, 62 P. (PA1)

  • Deposit

    CLUTTEN, J.M., 1980, ANGLO-AMERICAN CORP. SERVICES LTD., (SEP). (RR1-RR3)

  • Deposit

    MINING ANNUAL REVIEW, 1980, SOUTH AFRICA--ZIMBABWE: MINING JOURNAL LTD., LONDON, P. 429-433. (PA2, PA3, RR41)

  • Deposit

    CLUTTEN, J.M., FOSTER, R.P., AND MARTIN, A., 1981, NICKEL MINERALIZATION IN ZIMBABWE: EPISODES, V. 1981, NO. 2, P-. 10-15.

  • Deposit

    ROSKILL INFORMATION SERVICES, 1981, THE ECONOMICS OF NICKEL, 3D ED.: LONDON, ROSKILL INFORMATION SERVICES, LTD., -[498] P. (RR4)

  • Deposit

    ROSS, J.R., AND TRAVIS, G.A., 1981, NICKEL SULFIDE DEPOSITS OF WESTERN AUSTRALIA IN GLOBAL PERSPECTIVE: ECONOMIC -GEOLOGY, V. 76, NO. 6, P. 1291-1329. (PC1)

  • Deposit

    LEROEX, H.D., 1964, NICKEL DEPOSIT ON THE TROJAN CLAIMS, BINDURA DISTRICT, SOUTHERN RHODESIA [ZIMBABWE]: IN HAUGH-TON, S.H., ED., GEOLOGY OF SOME ORE DEPOSITS IN SOUTHERN AFRIC-A, V. II, DEPOSITS OF SOME MINERALS OUTSIDE THE WITWATERSRAND -BASIN: GEOLOGICAL SOCIETY OF SOUTH AFRICA, JOHANNESBURG, P. 5-09-520.

  • Production

    PA1: RF1; PA2, PA3: RF3, P. 429 PC1: RF6, P. 1326

General comments

Subject category Comment text
Deposit THIS RECORD WAS COMPILED FOR THE INTERNATIONAL STRATEGIC MINERALS INVENTORY. THE DATA WERE USED IN PREPARATION OF THE USGS CIRCULAR 930 SERIES OF REPORTS. MINERAL RESOURCE CATEGORIES AND CODES HEREIN ARE FROM THE INTERNATIONAL CLASSIFICATION SYSTEM RECOMMENDED BY THE UNITED NATIONS GROUP OF EXPERTS ON DEFINITIONS AND TERMINOLOGY FOR MINERAL RESOURCES. (SEE NATIONAL RESOURCES FORUM, V. 4, NO. 3, P. 307-313.). UNDERGROUND CONCENTRATE
Deposit THIS RECORD WAS COMPILED FOR THE INTERNATIONAL STRATEGIC MINERALS INVENTORY. THE DATA WERE USED IN PREPARATION OF THE USGS CIRCULAR 930 SERIES OF REPORTS. MINERAL RESOURCE CATEGORIES AND CODES HEREIN ARE FROM THE INTERNATIONAL CLASSIFICATION SYSTEM RECOMMENDED BY THE UNITED NATIONS GROUP OF EXPERTS ON DEFINITIONS AND TERMINOLOGY FOR MINERAL RESOURCES. (SEE NATIONAL RESOURCES FORUM, V. 4, NO. 3, P. 307-313.). UNDERGROUND

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1982 Foose, Michael P. U.S. Geological Survey

Beyond USGS

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

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