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Winterveld Tcl S. Section

Plant in South Africa with commodities Aluminum, Chromium, Iron, Magnesite, Silica
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Geologic information

Identification information

Deposit ID 10158829
MRDS ID W028409
MAS/MILS ID 7910200039
Record type Site
Current site name Winterveld Tcl S. Section
Alternate or previous names Winterveld Tcl South Section, Steelpoort Section, Onverwacht Section, Doornbosch Section, Dunn Section, Transvaal Consolidated Land And, Exploration Company Ltd., Winterveld Section, Chrome Section
Related records 10079236

Comments on the site names

  • THE CHROME SECTION AND THE DUNN SECTION ARE MINED OUT.

Geographic coordinates

Point of reference Claim
Geographic coordinates: 30.16811, -24.66335 (WGS84)
Elevation 5000
Location accuracy 10000(meters)
(click for info)

Geographic areas

Country
South Africa

Commodities

Commodity Importance
Aluminum Tertiary
Chromium Primary
Iron Tertiary
Magnesite Tertiary
Silica Tertiary

Nearby scientific data

Claim (1) 30.16811, -24.66335
ListMap

Ore body information

  • Strike N20W
    Dip 16W
    Thickness 1M
    Depth to top 150M
    Width 1240M
    Length 2660M
    Field Value
    MAS Matrix # 2
    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 UNKNOWN
    Strike And Dip N20W
    Minimum Depth to Top 0
    Date of Last Modification 920804
  • Strike N20W
    Dip 16W
    Thickness 1M
    Depth to top 150M
    Width 1240M
    Length 3000M
    Field Value
    MAS Matrix # 2
    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
    Strike And Dip N20W
    Date of Last Modification 920804
  • Strike N20W
    Dip 16W
    Thickness 1M
    Depth to top 150M
    Width 1240M
    Length 2700M
    Field Value
    MAS Matrix # 2
    MAS Column # 3
    Type of Orebody #1 STRATIFORM
    Shape of Orebody #1 TABULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Secondary Ore Control LITHOLOGY
    Strike And Dip N20W
    Date of Last Modification 920804

Comments on the geologic information

  • THE STEELPOORT SEAM IS THE ONLY SEAM PRESENTLY MINED. OTHER SEAMS OF ECONOMIC IMPORTANCE ARE LEADER CHROMITE SEAM AND UPPER GROUP NO. 2 PLATINUM AND CHROMITE SEAM. LEADER SEAM IS .8 M ABOVE THE STEELPOORT SEAM AND IS .3 M THICK.

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Deposit size Large
Significant Yes
Discovery year 1892
Mining method Open Stope - Breast Stoping
Year of first production 1956
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Mining district

District name East Bushveld Complex

Ownership information

  • Type Owner
    Owner Rand Mines Ltd.
    Interest 100
    Home office South Africa
    Year 1992
  • Type Owner
    Owner Vansa Vanadium
    Home office South Africa
    Year 1992
  • Type Operator
    Owner Winterveld (T. C. L.) Chrome Mines (Pty) Ltd.
    Home office South Africa
    Year 1992

Comments on the production information

  • THE OVERALL MILL RECOVERY IS 87.5 % THE STEELPORT SECTION PRODUCES: 35,000 MT/YR LUMP AND CHIP ORE, 233,811 MT/YR FINES, 25,220 MT/YR WASHED FINES AND 25,275 MT/YR EACH FOR FOUNDRY SAND AND WRG GRADE.
  • THE LUMP IS ABOUT 43.5 % CR2O3 AND THE CHIP IS ABOUT 40.5% CR2O3, THE NUMBER IN THE PRODUCT DESCRIPTION IS AN AVE. THE ENTRY IN THE UNIT PRODUCTION COST CATEGORY IS A WEIGHTED AVERAGE OF THE STEELPORT AND DOORNBOSCH TONNAGE.
  • HISTORY OF PRODUCTION RECORD DESCRIBES THE FUTURE PRODUCTION AS ANALYZED IN 1986 AVAIL. STUDY. PRODUCTION BROKEN DOWN BY YEARS AND SECTION.

Comments on the reserve resource information

  • Q-MATRIX RESOURCE REPRESENTS ESTIMATED TONNAGE ON THREE SECTIONS: DOORNBOSCH, STEELPORT AND ONVERWACHT ON THREE FARMS ONVERWACHT 292, DOORNBOSCH 294 AND WINTERVELD 293 AS OF 1/89. THE TONNAGE ESTIMATES ARE FOR THE MAIN STEELPORT SEAM (LG 6 ). THE LEADER SEAM (LG 6A ) IS ALSO PRESENT BUT NOT MINED OR ANALYZED MATRICES 1 AND 2 ARE ESTIMATED TO A 300 M VERT DEPTH, MATRIX 3 IS ESTIMATED TO A 600 M VERT DEPTH. Q-MATRIX 1 IS THE IN-SITU ESTIMATED TONNAGE 1/89. COL 1 IS THE STEELPORT SECTION, COL 2 IS THE DOORNBOSCH SECTION AND COL 3 IS THE ONVERWACHT SECTION. COL 4 IS THE COMBINED ESTIMATED TONNAGE. THIS TONNAGE ANALYZED FOR ECONOMICS IN 1/89 AVAILIBILITY STUDY. Q-MATRIX 2 IS THE ESTIMATED RECOVERABLE RESOURCE TONNAGE 1/89 COL 1 IS THE STEELPORT SECTION, COL 2 IS THE DOORNBOSCH SECTION AND COL 3 IS THE ONVERWACHT SECTION. COL 4 IS THE COMBINE EST- IMATED TONNAGE. Q-MATRIX 3 IS THE ESTIMATED RECOVERABLE RESOURCE AT 600 M VERT. DEPTH AS OF 1/89. COL 1 IS THE STEELPORT SECTION, COL 2 IS THE DOORNBOSCH SECTION AND COL 3 IS THE ONVERWACHT SECTION. COL 4 IS THE COMBINED ESTIMATED TONNAGE. TONNAGE FROMM 300- 600 M VERT. NOT INCLUDED IN 1/89 AVAILIBILITY STUDY.
  • COMPRISED OF : STEELPOORT, ONVERWACHT, DOORNBOSCH SECTIONS STEELPOORT= 420,000 MTPY ROM, DOORNBOSCH=540,000 MTPY, ONVER- WACHT= 637,000 MTPY. DEVEL.SCHD.FOR AVAIL.STUDY AS FOLLOWS: 1985-2000 = 960,000 MTPY ROM FOR 80,000 MTPY LUMP, 534,000 MTPY FINES, 174,000 MTPY WASHED FINES & CONCS. 2002-2016 = 637,000 MTPY ROM FOR 53,000 MTPY LUMP, 355,000 MTPY FINES, 115,000 MTPY WASHED FINES & CONCS.
  • 1/89 INSITU DEMO. TONNAGE IS FOR STEELPORT SEAM ON ALL 3 SECTIONS TO 300 M VERT. 90 % REC., 1.0 M THICK, DIP =16 DEGS.

Workings at the site

  • Type of workings Underground
    Length 15200M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method BREAST STOPING 10-30
    Percent Recovery 90
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Length of Inclines (m) 1250
    Slope of Inclines 14
    Number of Inclines 2
    1st Condition of Workings OPEN
    Capacity 1680
    Capacity Units MT ORE/DAY
    Unit Production Cost 18.39
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1992
  • Type of workings Underground
    Length 17500M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method BREAST STOPING 10-30
    Percent Recovery 90
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Length of Inclines (m) 1240
    Slope of Inclines 14
    Number of Inclines 3
    1st Condition of Workings OPEN
    Capacity 2160
    Capacity Units MT ORE/DAY
    Unit Production Cost 18.46
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1992
  • Type of workings Underground
    Length 14200M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 3
    Status of Mining Method ESTIMATE
    Mining Method BREAST STOPING 10-30
    Percent Recovery 90
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Length of Inclines (m) 1240
    Slope of Inclines 14
    Number of Inclines 2
    1st Condition of Workings OPEN
    Capacity 2548
    Capacity Units MT ORE/DAY
    Unit Production Cost 18.46
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1992

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 7910200039
USGS Mineral Resources Data System MRDS W028409 MAS references MRDS

Bibliographic references

  • Deposit

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

  • Deposit

    S. AFRICA.

  • Deposit

    CHROMIUM IN S. AFRICA: 1968, JOUR. OF THE S. AFRICAN INST. O

  • Deposit

    MINING AND METALLURGY.

  • Deposit

    RANKIN, G., 1975, CHROMIUM AND FERROCHROMIUM IN S. AFRICA.

  • Deposit

    THE TEX REPORT, SOUTH AFRICAN CHROME, 1978, PP. 101-113, AND

  • Deposit

    1980, PP. 89-103.

  • Deposit

    SOUTH AFRICAN MINING JOURNAL, MARCH 1982, WINTERVELD IS ON

  • Deposit

    TOP OF THE WORLD, PP. 34-38.

  • Deposit

    MINING JOURNAL, APRIL 1981, P. 296.

  • Deposit

    DE WIT, S.F., 1952, CHROMITE INVESTIGATIONS-PART III-

  • Deposit

    VARIATIONS IN THE COMPOSITION OF THE PURE CHROMITE

  • Deposit

    MINERAL FROM THE EASTERN CHROME BELT, LYDENBURG

  • Deposit

    DISTRICT: JOURNAL OF THE CHEMICAL, METALLURGICAL, AND

  • Deposit

    MINING SOCIETY OF SOURTH AFRICA, PP. 143-155.

  • Deposit

    DMA SERIES 1501.SHEET SH 34-7.SCALE 1:250,000

  • Deposit

    COAL, GOLD, AND BASE MINERALS OF SOUTHERN AFRICA, APRIL

  • Deposit

    1978, WINTERVELD OFF IN TOP GEAR, PP. 19-31.

  • Deposit

    ANON., 1982,"WINTERVELD IS ON TOP OF THE WORLD", S.A. MINING

  • Deposit

    & ENGINEERING JOURNAL, MARCH 1982.

  • Deposit

    IRELAND, K.L. "THE WINTERVELD (TCL) CHROME MINE LIMITED,

  • Deposit

    EASTERN BUSHVELD COMPLEX".

  • Deposit

    GOLDER & ASSOC., 1981, "DEPOSIT PROFILE WINTERVELD (TCL),

  • Deposit

    TRANSVAAL, SOUTH AFRICA", OCT 1981.

  • Deposit

    SILK, M.H., 1988, "WORLD CHROMITE RESOURCES AND FERRO-

  • Deposit

    CHROMIUM PRODUCTION", MINTEK SPECIAL PUB. NO. 11, 1988.

  • Deposit

    VVSA, VANSA VANADIUM S.A. LTD. ANNUAL REPORT 1989.

Reporter information

Type Date Name Affiliation Comment
Reporter 22-SEP-1992 Boyle, Ed U.S. Bureau of Mines