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  3. Mineral Resource Data System (MRDS)

Dilokong

Plant in South Africa with commodity Chromium
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Ownership information
  12. Production statistics
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10183167
MRDS ID DE00038
MAS/MILS ID 7910200151
Record type Site
Current site name Dilokong
Alternate or previous names Mooihoek and Maandagshoek Farms
Related records 10021387

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 30.14311, -24.57996 (WGS84)
Elevation 1000
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

South Africa(country)

Africa(continent)

Land(continent)

Geographic areas

Country
South Africa

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Unknown
Pyroxene Unknown

Nearby scientific data

Ore Body (1) 30.14311, -24.57996
ListMap

Economic information

Ore body information

  • Strike N15W
    Dip 15W
    Thickness 1.1M
    Length 7500M
    Width 1160M
    Depth to top 150M
    Field Value
    MAS Matrix # 1
    MAS Column # 2
    Type of Orebody #1 STRATIFORM
    Shape of Orebody #1 TABULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 SILICIFICATION
    Strike And Dip N15W:15W
    Minimum Depth to Top 0
    Date of Last Modification 930525
  • Area 620HA
    Field Value
    Total Surface Area (HA) 620
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1973
Mining method Open Stope - Breast Stoping
Year of first production 1979
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Mining district

District name East Bushveld Complex

Ownership information

  • Type Owner
    Owner Lebowa Development Corp. Ltd.
    Interest 100
    Home office South Africa
    Year 1989
  • Type Operator
    Owner Dilokong Chrome Mine Pty. Ltd.
    Home office South Africa
    Year 1989

Production statistics

  • Year 1979
    Description Annual Production 1979 65000 Mt Product / Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 65000mt
  • Year 1980
    Description Annual Production 1980 85000 Mt Product / Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 85000mt
  • Year 1981
    Description Annual Production 1981 100000 Mt Production / Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 100000mt
  • Year 1982
    Description Annual Production 1982 100000 Mt Products / Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 100000mt
  • Year 1983
    Description Annual Production 1983 6000 Mt Products / Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 6000mt
  • Year 1984
    Description Annual Production 1984 99000 Mt Products / Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 99000mt

Comments on the reserve resource information

  • 1/89 INSITU DEMO.TONNAGE= ON MAANDAGSHOEK FARM ONLY, TO 300 M VERT.DEPTH. 75% RECOV. MOOIHOEK FARM TONNAGE IN 791-020-0210
  • THE RESOURCE TONNAGE IN Q-MAT.1 REPRESENTS THE TONNAGE FOR THE MAIN STEELPORT SEAM OVER A 7500 M. STRIKE LENGTH ON FARMS: MAANDAGSHOEK 254 KT AND MOOIHOEK 255 KT. 75% PROB. LEVEL, ESTIMATED TO A VERTICAL DEPTH OF 300 M. (1160 M, ON DIP OF 15 DEG.). COLS 1 AND 2 REPRESENT THE IN-SITU AND RECOVERABLE RESOURCE TONNAGES RESPECTIVELY.

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method BREAST STOPING 10-30
    Percent Waste Rock 0
    Percent Recovery 75
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Length of Inclines (m) 1160
    Slope of Inclines 15
    Number of Inclines 2
    1st Condition of Workings OPEN
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1989

Comments on other economic factors

  • DEVELOPMENT WORK STARTED IN 1979; TWO SHAFTS COMPLETED BY SUMMER OF 1977. PRODUCTION BEGAN SEPT.1977(3,000 MT); 4,000 MT IN OCT., 5,000 MT IN NOV.-SCHEDULES CALLED FOR 9,000-10,000 MT/MO.FOR JAN.-MAR.PERIOD OF 1975. ANNUAL CAPACITY FOR FIRST PHASE IS 100,000-120,000 MT.

Reference information

Bibliographic references

  • Deposit

    FERRO ALLOY MANUAL,1978 ED., THE TEX REPORT LTD.,TOKYO,

  • Deposit

    JULY 5,1978, PP.108-110.

  • Deposit

    JOHANNESBURG DISPATCH NO.187, JUNE 2,1955, PLATE NO.1,

  • Deposit

    U.S.STATE DEPT.

  • Deposit

    WORLD MINING YEARBOOK,1977.

  • Deposit

    MINING CORPORATION, LIMITED ANNUAL REPORTS 1977-1980

  • Deposit

    GOLDER ASSOCIATES, 1981, "DEPOSIT PROFILE - DILOKONG, RE-

  • Deposit

    PUBLIC OF SOUTH AFRICA", AUG. 1981.

  • Deposit

    ANON., MINING JOURNAL, "LEBOWA PLATINUM PROJECT", APRIL 8,

  • Deposit

    1977.

  • Deposit

    SILK M H, 1988, "WORLD CHROMITE RESOUCE AND FERROCHROME

  • Deposit

    PRODUCTION", MINTEK SPECIAL PUBL. NO. 11.

  • Deposit

    DAVIDOFF R L, BOYLE E H JR., 1988, "NOTES FROM VISIT TO THE

  • Deposit

    REPUBLIC OF SOUTH AFRICA", USBM, MINERALS AVAIL. FIELD

  • Deposit

    OFFICE.

Reporter information

Type Date Name Affiliation Comment
Reporter 25-MAY-93 Boyle, Ed 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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