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

Chroombronne

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. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10280621
MAS/MILS ID 7910200198
Record type Site
Current site name Chroombronne
Alternate or previous names Batlhako Ferrochrome Plant

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 27.31815, -25.71333 (WGS84)
Elevation 1000
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

South Africa(country)

Africa(continent)

Land(continent)

Geographic areas

Country
South Africa

Comments on the location information

  • SMELTER IS LOCATED IN A SUBURB OF THE CITY OF RUSTENBURG. FOR STUDY, IT WAS ASSUMED THAT THE LOCATION WAS AN EASTERN SUBURB APPROX. 8 KM FROM THE MINE SITE. ONE 1989 SOURCE STATES THE MILL IS 17 KM FROM THE MINE SITE.

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Unknown
Feldspar Unknown
Magnesite Unknown
Pyroxene Unknown

Nearby scientific data

Ore Body (1) 27.31815, -25.71333
ListMap

Economic information

Ore body information

  • Strike N30W
    Dip 13W
    Thickness 1.4M
    Length 2800M
    Width 1570M
    Depth to top 150M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    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 N30W:13W
    Minimum Depth to Top 0
    Date of Last Modification 930527

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1978
Mining method Open Stope - Breast Stoping
Year of first production 1985
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Mining district

District name West Bushveld Complex

Ownership information

  • Type Owner-Operator
    Owner Chromecorp Technology Corp. (Cct)
    Interest 100
    Home office South Africa
    Year 1992

Production statistics

  • Year 1983
    Period 1980-1983
    Description Avg. Annual Production 1980-1983 80000 Mt Ore / Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Chromium Chromium 80000mt
  • Year 1984
    Description Annual Production 1984 85000 Mt Ore / Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Chromium Chromium 85000mt
  • Year 1987
    Period 1985-1987
    Accuracy Estimate
    Description 1/89 Estim. Production 1985-1987 138200 Mt Ore / Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Chromium Chromium 138200mt

Comments on the production information

  • AN ACTUAL SCHEME OF PRODUCTS WAS FOUND FROM CHROMIUM REVEIW AS FOLLOWS: LUMP: SCREENED, FOLLOWED BY HMS. +10MM. 39-40% CR2O3. CHIP: SCREENED, FOLLOWED BY HMS. -10MM,+1MM. 35-37% CR2O3. CONC: SPIRAL CONCENTRATORS. -1MM. 44%CR2O3.

Comments on the reserve resource information

  • MATRIX ONE IS THE RECOVERABLE RESOURCE FOR THE 1/89 AVAIL. STUDY. COL 1 IS THE ORE, COL 2 IS THE WASTE AND COL 3 IS THE COMBINED TOTAL TONNAGE. MATRIX TWO REPRESENTS THE IN-SITU RESOURCE TONNAGE FOR THE 1/89 AVAIL. STUDY. COL 1 IS THE ORE, COL 2 IS THE WASTE AND AND COL 3 IS THE COMBINED TOTAL.
  • 1/89 INSITU DEMO.TONNAGE= 1.1 M LG6 SEAM + 0.30 M LG6A SEAM + 0.30 M WASTE TO 300 M VERT.DEPTH. RECOV.= 70 PCT. DIP=12 DEGS.

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 Recovery 70
    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) 1500
    Slope of Inclines 12
    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

  • AFTER PURCHASE FROM CCT IN 1987, THE MINE UPGRADED TO A FULLY MECHANIZED MINING SYSTEM.

Reference information

Bibliographic references

  • Deposit

    RANKIN G, 1975, "CHROMIUM AND FERROCHROMIUM IN SOUTH AFRICA"

  • Deposit

    SANDERS AND TAYLOR INC., JOHANNESBURG SA.

  • Deposit

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

  • Deposit

    PRODUCTION", MINTEK SPECIAL PBL. NO. 11.

  • Deposit

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

  • Deposit

    REPUBLIC OF SOUTH AFRICA", USBM.

  • Deposit

    FOURIE G P, "THE CHROMITE DEPOSITS OF THE RUSTENBURG AREA",

  • Deposit

    GEOLOGICAL SURVEY BULLETIN 27.

  • Deposit

    NIENABER P J, 1989, "LATEST FERROCHROME PLANT", CHROMIUM RE-

  • Deposit

    VIEW NO. 10, OCT. 1989.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-MAY-1993 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