1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Mooinooi

Plant in South Africa with commodity Chromium
Map
XML
JSON
KML
B
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. Reserves and resources
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10207771
MRDS ID DE00040
MAS/MILS ID 7910200150
Record type Site
Current site name Mooinooi
Related records 10021389

Geographic coordinates

Point of reference Claim
Geographic coordinates: 27.57365, -25.70663 (WGS84)
Elevation 1200
Location accuracy 1000(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
Plagioclase Unknown
Pyroxene Unknown

Nearby scientific data

Claim (1) 27.57365, -25.70663
ListMap

Economic information

Ore body information

  • Strike N80E
    Dip 12N
    Thickness 1.3M
    Length 3000M
    Width 700M
    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. UNKNOWN
    Type of Wallrock Alter. #1 OTHER
    Strike And Dip N80E:12N
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. .5
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 930311

Comments on the geologic information

  • TYPE OF ORE BODY IS LAYERED INTRUSIVE.

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Mining method Open Stope - Breast Stoping
Year of first production 1978
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Sizing

Mining district

District name West Bushveld Complex

Ownership information

  • Type Operator
    Owner Cromore Ltd.
    Home office South Africa
    Year 1989
  • Type Owner
    Owner South African Manganese Amcor Ltd.
    Interest 100
    Home office South Africa
    Year 1989

Production statistics

  • Year 1980
    Description Production Of Chromite Products 180000 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 180000mt
  • Year 1981
    Description Production Of Chromite Products 240000 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 240000mt
  • Year 1982
    Description Production Of Chromite Products 400000 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 400000mt
  • Year 1983
    Description Production Of Chromite Products 480000 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 480000mt
  • Year 1984
    Description Production Of Chromite Products 500000 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 500000mt
  • Year 1985
    Description Rate Of Mine Production Of Ore 570000 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Chromium Chromium 570000mt

Comments on the production information

  • LINES 001-005 REPRESENTS THE HISTORY OF THE PRODUCTION OF PRODUCTS. LINES 006-009 REPRESENT THE RATE OF MINE PRODUCTION FOR THE 1/89 AVAILIBILITY STUDY.

Reserves and resources

  • Type In-situ
    Estimate year 1978
    Measured 100000mt ore
    Indicated 10000000mt ore
    Demonstrated 10100000mt ore
    Inferred 12000000mt ore
    Total resources 22100000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 40 wt-pct Chromium Major 1978

Comments on the reserve resource information

  • MINEABLE RESERVES: BASED ON AN OVERALL RECOVERY 82% WITH AN REDUCE P CONTENT OF CONCS. TO .003 % P. BECAUSE OF THE STRES
  • CROMORE LTD.=OPERATOR. DEVELOPED IN 1978. ELANDSKRAAL 469 FARM NOTE: BENEFICIATION PLANT HAS FACILITIES TO PRODUCE FOUNDRY SAND CONCS. BUT NEED ALL LUMP & FINES FOR WITBANK SMELTER. DEVELOPED IN 1978. 680,000 MTPY ROM FOR: 260,000 MTPY LUMP AND 336,000 MTPY FINES, ALL PRODUCTS AT 40.0 % CR2O3. MG1 SEAM = 1.3 M THICK, DIP= 12 DEGS.
  • THE Q-MAT 1 COL 1 TONNAGE REPRESENTS THE IN-SITU ESTIMATED FOR ONLY 1 SEAM (MG 1) WHICH IS THE ONLY SEAM BEING MINED AT PRESENT. COL 2 TONNAGE REPRESENTS THE RECOVERABLE RESOURCE FOR THE MG 1 SEAM. THE 75 % PROB. LEVEL IS USING A VERTICAL DEPTH OF 300 M. THE PROPERTY ALSO HAS 3 OTHER SEAMS PRESENT (MG 2, MG 3, MG 4). HOWEVER ALL ARE LOWER GRADE (30.5-37.6% CR2O3) WITH LOW CR/FE RATIOS (1.24-1.36/1.0).
  • 1/89 INSITU DEMO.TONNAGE= MG1 SEAM ONLY TO 300 M VERT.DEPTH. ALL ON ELANDSKRAAL 469 FARM. 75 PCT RECOVERY.

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 .1
    Percent Recovery 75
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Length of Inclines (m) 1500
    Slope of Inclines 12
    Number of Inclines 1
    1st Condition of Workings OPEN
    Capacity 2720
    Capacity Units MT ORE/DAY
    Unit Production Cost 17.63
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1989

Comments on other economic factors

  • AFTER ALL PRODUCTS ARE RUN THROUGHK THE WITBANK SMELTER, THEY ARE RAILED 645 KM TO RICHARDS BAY. THE USBM SEQ # FOR WITBANK IS 791-020-1011.
  • THE LUMP ORE HAS SPECIAL HARDER CHARACTERISTICS THAT MAKE MOOINOOI ORE AN ATTRACTIVE BUY. NEXT TO THE ORE CONVEYOR, A LIFT IS PRESENT TO CARRY WORKERS UNDERGROUND. THE LIFT IS MUCH LIKE A SKI LIFT SET AT 12 DEGREES
  • ANALYZED USING 600,000 MT/YR PRODUCTS AT 40 % CR2O3 AND 78,000 MT/YR WASTE AT 10 % CR2O3. ALL PROCESSING TAKES PLACE IN TWO BUILDINGS. THE MAIN HAND SORTING BUILDING AND THE FINAL SCREENING HOUSE.

Reference information

Bibliographic references

  • Deposit

    WORLD MINING YEARBOOK,1977.

  • Deposit

    E/MJ INTERNATIONAL DIRECTORY OF MINING AND MINERAL PROCESS-

  • Deposit

    ING OPERATIONS.1978.MCGRAW HILL.NEW YORK. P.337.

  • Deposit

    SIEMS,P.1976.CHROMITE MINES AND RESOURCES IN THE REPUBLIC

  • Deposit

    OF SOUTH AFRICA.USBM.MINERALS AVAIL.SYSTEM.

  • Deposit

    E/MJ INTL.DIRECTORY OF MINING AND MINERAL PROCESSING OPER-

  • Deposit

    ATIONS.1978.MCGRAW-HILL.N.Y.P.337.

  • Deposit

    WORLD MINING, SEPT.1970, PP.97-101.

  • Deposit

    PERSONAL COMMUNICATIONS BY ROGER BALLEN. SITE VISITS TO

  • Deposit

    SOUTH AFRICA MINES. AUGUST 1981.

  • Deposit

    TALJAARDT, J.J., AND W. BLAIR. "CROMORE LIMITED-MOOINOOI

  • Deposit

    MINE." SAMANCOR MANAGEMENT SERVICES (PTY.) LIMITED.

  • Deposit

    UNDATED.

  • Deposit

    MINING MAGAZINE, AUGUST 1981, PP. 84-93.

  • Deposit

    PAPP J F, 1985, "TRIP NOTES FROM OCT 1985" USBM.

  • Deposit

    SAMANCOR, 1986, "SAMANCOR NEWS" JOHANNESBURG SA.

  • Deposit

    SAMANCOR, 1989, "CROMORE LTD. MOOINOOI, GENERAL INFORMATION

  • Deposit

    BROCHURE.

  • Deposit

    GOLDER ASSOC., 1981, "DEPOSIT PROFILE-MOOINOOI, SOUTH

  • Deposit

    AFRICA", 813-4001.

  • Deposit

    SILK M H, 1988, "WORLD CHROMITE RESOURCES 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.

Reporter information

Type Date Name Affiliation Comment
Reporter 12-MAR-93 Boyle, Ed U.S. Bureau of Mines

Beyond USGS

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

Maps centered on this site