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Rooiberg Tin

Producer in South Africa with commodities Tin, Fluorine-Fluorite, Copper, Iron
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10079225
MRDS ID W028274
Record type Site
Current site name Rooiberg Tin
Related records 10280473

Geographic coordinates

Geographic coordinates: 27.73477, -24.78 (WGS84)
Elevation 1216
Relative position 64 KILOMETERS WEST OF THE TOWN OF WARMBATHS

Site location context

Political divisions (FIPS codes)

South Africa(country)

Africa(continent)

Land(continent)

Geographic areas

Country
South Africa

Comments on the location information

  • LOCATION REFERENCES GIVEN ABOVE PERTAIN TO ROOIBERG MINERALS DEVELOPMENT CO. LTD.,'S "A" MINE LEASE AREA ONLY. THIS COMPANY IS ALSO PRODUCING FROM ITS NEARBY "C" MINE AT LAT. 24 DEG. 54 MIN. S; LONG. 027 DEG. 43 MIN. E.

Commodities

Commodity Importance
Tin Critical Primary
Fluorine-Fluorite Critical Tertiary
Copper Tertiary
Iron Tertiary

Comments on the commodity information

  • TIN HAS BEEN THE ONLY METAL RECOVERED BY THIS COMPANY FROM ITS LISTED LEASE AREAS ("A", "B", "C" AND "D" MINES AND THE VELLEFONTEIN MINE). THERE ARE NO KNOWN PLANS TO EXPLOIT MINOR COMMODITIES PRESENT.

Materials information

Materials Type of material
Cassiterite Ore
Chalcopyrite Ore
Fluorite Ore
Pyrite Ore
Tourmaline Ore
Magnetite Unknown

Alteration

  • (Local) None

Analytical data

Result SEE PRODUCTION ENTRIES

Mineral occurrence model information

Model code 44
USGS model code 14c
Deposit model name Replacement Sn

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Shale (Magaliesburg Stage. Pretoria Series. Transvaal System);Shaley Quartzite (Magaliesburg Stage);Crossbedded Feldspathic Quartzite (Magaliesburg Stage)
    Rock description Shale (Magaliesburg Stage. Pretoria Series. Transvaal System);Shaley Quartzite (Magaliesburg Stage);Crossbedded Feldspathic Quartzite (Magaliesburg Stage)

Nearby scientific data

(1) 27.73477, -24.78
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Regionally, The Area Is Dominated By Two Synclines (The Rooiberg Trough And The Elandsberg Trough) Enclosing A Broad Anticline. Two Thrust Zones Traverse The Area.
Type of structure Local
Structure description Gently Dipping Host Rocks (Quartzites And Shale) Marked By Steeply Dipping Mineralized And Brecciated Fractures And Fissures. Three Pre-Mineral Thrust Faults Developed Subsequent To Regional Folding Enhance Mining With Cassiterite Concentrations But Concurrently Make Mining Difficult Because Of Major Roof Support Requirements.

Ore body information

  • General form IRREGULAR WITH MINERALIZED FISSURES & BRECCIATED FRACTURES
    Strike NW-SE
    Dip 0 - 10 DEG. NE
    Thickness 9M
    Depth to bottom 150M

Controls for ore emplacement

  • See Comments

Economic information about the deposit and operations

Development status Producer
Commodity type Both
Deposit size Medium
Significant No
Discovery year 1905
Year of first production 1908

Mining district

District name Rooiberg Tin Field

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner The Rooiberg Minerals Development Co. Ltd.
  • Type Owner
    Owner Gold Fields Of South Africa Ltd.

Production statistics

  • Year 1978
    Material ORE SN
    Accuracy Accurate
    Description Ap_Grade: ^2.3 % Sn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Tin Tin 2wt-pct
  • Year 1979
    Material CON SN
    Accuracy Accurate
    Description Ap_Grade: ^1.9% Sn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Conc. Tin Tin 2wt-pct
  • Year 1980
    Material ORE SN
    Accuracy Accurate
    Description Ap_Grade: ^1.9% Sn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Tin Tin 2wt-pct
  • Year 1980
    Material SN
    Accuracy Accurate
    Description Ap_Grade: ^1.8% Sn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Tin Tin 2wt-pct
  • Year 1981
    Material SN
    Accuracy Accurate
    Description Ap_Grade: ^57.3% Sn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Tin Tin 57wt-pct
  • Year 1982
    Material ORE SN
    Accuracy Accurate
    Description Ap_Grade: ^1.5% Sn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Tin Tin 2wt-pct
  • Year 1983
    Material CON SN
    Accuracy Accurate
    Description Ap_Grade: ^39.4% Sn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Conc. Tin Tin 39wt-pct
  • Year 1984
    Period 1908-1984
    Material ORE SN
    Description Cp_Grade: ^1.2% Sn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Tin Tin 1wt-pct

Comments on the production information

  • ORE DATA ARE TONS OF ORE MILLED. TIN ENTRIES ARE TONS OF TIN METAL CONTAINED IN CONCENTRATES.

Workings at the site

  • Type of workings Underground
    Overall depth 150M

Comments on the workings information

  • MINING FOLLOWS MINERALIZED POCKETS OF ORE IN FRACTURES AND FISSURES IN DEFINABLE ZONES. THE POCKETS ARE ROUGHLY LENTICULAR, VARY IN SIZE FROM A FEW CENTIMETERS TO ONE METER, AND AT TIMES FORM SHEET-LIKE DEPOSITS OF HIGH GRADE ORE ALONG THE BEDDING PLANES OF THE HOST ROCKS. MOST OF THE PRODUCTION IS OBTAINED FROM DEVELOPMENT. STOPING IS LIMITED BECAUSE OF RARITY OF SUFFICIENTLY-SIZED ORE POCKETS. VALUE SPORADIC. RESERVES OF STANDING ORE ARE ALMOST IMPOSSIBLE TO ESTIMATE.

Comments on development

  • MILL.CAP: 0.5 MIL. MET. T/YR. ; ECON.COM: CURRENTLY, SOUTH AFRICA'S LARGEST PRODUCER OF TIN CONCENTRATED ANNUALLY. FURTHER, THE FIRM DECIDED ( IN NOVEMBER 1978 ) TO CONSTRUCT A TIN SMELTER ON SITE TO MEET PROJECTED SALES DEMANDS. A FAVORABLE LONG-LIFE OUTLOOK IS THUS ON THE HORIZON.

Reference information

Bibliographic references

  • Deposit

    TIN MINING IN SOUTH AFRICA; SEVENTH COMMONWEALTH MINING AND METALLURGICAL CONGRESS; MCDERMOTT, E. K. AND OXLEY-OXLAND, G. ST. J.; 1961

  • Deposit

    MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, FIFTH EDITION, HANDBOOK 7 ; 1976

  • Deposit

    "THE ROOIBERG TIN OCCURRENCES", THE ROOIBERG MINERALS DEVELOPMENT COMPANY LIMITED ( A BRIEF OF THE COMPANY'S OPERATIONS, CIRCA 1973 )

  • Deposit

    THE ROOIBERG MINERALS DEVELOPMENT COMPANY LIMITED, 1978, ANNUAL REPORTS.

  • Deposit

    THE ROOIBERG MINERALS DEVELOPMENT COMPANY LIMITED, 1977, ANNUAL REPORTS.

  • Deposit

    THE ROOIBERG MINERALS DEVELOPMENT COMPANY, LIMITED, 1976, ANNUAL REPORTS.

  • Deposit

    THE ROOIBERG MINERALS DEVELOPMENT COMPANY, LIMITED, 1975, ANNUAL REPORTS.

  • Deposit

    UNIVERSITY OF THE WITWATERSRAND, (N.D.), TIN PRODUCTION FROM THE BUSHVELD COMPLEX: UNIVERSITY OF THE WITWATERSRAND, ECONOMIC GEOLOGY RESEARCH UNIT. 253^ LENTHAL, D.H., 1972, INFORMATION CIRCULAR NO. 43: LENTHAL, D.H. 253^ LEUBE, ALFRED, 1959, STRUCTURAL CONTROL IN THE ROOIBERG TIN FIELDS: GEOLOGICAL SOCIETY OF SOUTH AFRICA SOCIETY.

  • Production

    ROOIBERG MINERALS DEVELOPMENT CO. LTD ANNUAL REPORT ; ROOIBERG ANNUAL REPORT - 1983 ; ROOIBERG TIN ANNUAL REPORT - 1984 ; ROOIBERG TIN ANNUAL REPORT - 1985 ; ROOIBERG TIN ANNUAL REPORT-1986 ; ROOIBERG ANNUAL REPORT - 1981 ; ROOIBERG TIN ANNUAL REPORT - 1982 ; ROOIBERG TIN COMPANY ANNUAL REPORT 1980 ; ROOIBERG MINERALS DEVELOPMENT CO. LTD. ANNUAL REPORT 1979

General comments

Subject category Comment text
Deposit MAX. THICKNESS REFERS TO MINERALIZED BRECCIA FRACTURES (AVE. THICKNESS: 1.5 METERS). FISSURE WIDTHS ARE ABOUT 0.1 METER. STRIKE & DIP REFER TO HOST ROCKS. MINERALIZED FISSURES AND FRACTURES ARE STEEPLY DIPPING WITHIN HOST ROCKS. DEPTHS TO TOP AND BOTTOM REFER TO MINING DEPTHS FROM OUTCROP TO CURRENT MINING DEPTHS BELOW THE SURFACE. EXPLORATION HAS PROVED EXTENSION OF MINERALIZATION TO GREATER DEPTHS.
Deposit INFORMATION MERGED FROM RECORD NUMBER W028910 ; W030965 ; W032366 ; W033028 ; W033085 ; W033756 ; W044591 ; W055343

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1984 Sweetwood, Charles W. Department of State
Updater 01-JUN-1985 Mccarter, Lorna D. Department of State
Updater 01-MAY-1980 Sweetwood, Charles W. Department of State
Updater 01-JUL-1981 Mccarter, Lorna D. Department of State
Updater 01-AUG-1982 Mccarter, Lorna D. Department of State
Updater 01-JUN-1984 Mccarter, Lorna D. Department of State
Updater 01-JUL-1983 Mccarter, Lorna D. Department of State
Updater 01-JUN-1985 Mccarter, Lorna D Department of State
Updater 01-APR-1986 Mccarter, Lorna D Department of State
Updater 01-JUL-1987 Mccarter, Lorna D. Department of State

Beyond USGS

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

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