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Dutoitspan Mine

Producer in Eastern Cape, South Africa with commodity Diamond
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10071397
MRDS ID W014766
Record type Site
Current site name Dutoitspan Mine

Geographic coordinates

Geographic coordinates: 24.86819, -28.76321 (WGS84)
Elevation 1210
Relative position AT THE TOWN OF KIMBERLEY (SOUTHEAST OF CITY CENTER); ADJOINS BULTFONTEIN MINE

Site location context

Political divisions (FIPS codes)

Eastern Cape(province)

South Africa(country)

Africa(continent)

Land(continent)

Geographic areas

Country State
South Africa Eastern Cape

Commodities

Commodity Importance
Diamond Primary

Materials information

Materials Type of material
Garnet Gangue
Ilmenite Gangue
Phlogopite Gangue

Alteration

  • (Local) "Yellow Ground" Oxidized And Tuffaceous To Depth Of 15 M

Analytical data

Result DIAMOND RECOVERIES CURRENTLY RANGE BETWEEN 0.139 - 0.145 CARATS PERTON OF BLUE GROUND HOISTED. INDUSTRIAL DIAMONDS COMPRISE 60 PERCENT OF RECOVERIES, GEM DIAMONDS 40%

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Dutoitspan Kimberlite;Melaphyre And Granite
    Rock description Dutoitspan Kimberlite;Melaphyre And Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Kimberlite
    Rock unit name Dwyka Tillite And Shale
    Rock description Dwyka Tillite And Shale

Nearby scientific data

(1) 24.86819, -28.76321
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description An Elliptical/Vertical Pipe In Precambrian Melaphyre And Granite And In Karroo System Dwyka Tillite And Shale
Type of structure Local
Structure description Dutoitspan Kimberlite (Cretaceous); Dwyka Tillite & Shale (Karroo) (Paleozoic) Melaphyre And Granite (Precambrian)

Ore body information

  • General form ELLIPTICAL/VERTICAL
    Dip 90 - DEG
    Length 457M
    Width 283M

Controls for ore emplacement

  • Volcanic Crater Of Explosive Type Filled With Kimberlite

Economic information about the deposit and operations

Development status Producer
Commodity type Non-metallic
Deposit size Medium
Significant No
Discovery year 1870
Year of first production 1871

Mining district

District name Kimberley Area

Ownership information

  • Type Operator
    Owner Kimberley Division Mines
  • Type Owner
    Owner Debeers Consolidated Mines Ltd.

Production statistics

  • Year 1976
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^Industrial Diamonds 60 %, Gem Diamonds 40 %
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Diamond Diamond Gemstones 100wt-pct
  • Year 1977
    Material DIA
    Accuracy Accurate
    Description Ap_Grade: ^Industrial Diamonds 60%, Gem Diamonds 40%
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Diamond Gemstones 100wt-pct
  • Year 1984
    Period 1971-1984
    Material DIA
    Description Cp_Grade: ^Industrial: 60%
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Diamond Gemstones 60wt-pct
  • Year 1984
    Period 1971-1984
    Material ORE DIA
    Description Cp_Grade: ^17.32 Carats/100 Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Diamond Diamond Gemstones 0g/mt

Comments on the production information

  • DEVELOPMENT COMMENCED ON A NEW SUB-LEVEL CAVE BELOW THE 760 METER LEVEL/BLOCK CAVE

Workings at the site

  • Type of workings Underground
    Area 12.95HA
    Overall depth 760M

Comments on the workings information

  • CURRENT OPERATING LEVEL 760 M. BLOCK CAVING MINING METHOD EMPLOYED.

Comments on development

  • MILL.CAP: 2.0 MIL MET. T/YR. 1957 ; ECON.COM: ALL MINED ORE IS HAULED UNDERGROUND TO BULTFONTEIN SHAFT FOR HOISTING TO THE SURFACE. OPEN PIT OPERATION UNTIL 1889. THE MINE WAS CLOSED AT THAT TIME AND REOPENED IN 1906 AS UNDERGROUND OPERATION. IT HAS BEEN CLOSED TWICE SINCE, DURING WORLD WAR I AND DURING DEPRESSION OF 1930'S. CURRENTLY, BLOCK CAVING MINING METHOD EMPLOYED.

Reference information

Bibliographic references

  • Deposit

    MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA; PELLETIER, R.A.; 1964

  • Deposit

    INTERNATIONAL DIAMOND ANNUAL; WILSON, A. N.; VOL. 1, 1971

  • Deposit

    MODERN PRACTICES IN DIAMOND MINING IN SOUTH AFRICA; THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY; JOHANNESBURG; MARCH 1961

  • Deposit

    "KIMBERLEY CENTENARY" (SUPPLEMENT TO THE DIAMOND NEWS AND S.A. JEWELLER; JULY 1971). "THE KIMBERLEY DIAMONDS"; DE BEERS CONSOLIDATED MINES BROCHURE; UNDATED DEBEERS CONSOLIDATED MINES LIMITED ANNUAL REPORT; 197

  • Production

    DE BEERS CONSOLIDATED MINES LTD ANNUAL REPORTS ; DE BEERS ANNUAL REPORT - 1984 ; DE BEERS ANNUAL REPORT - 1985 ; DE BEERS ANNUAL REPORT-1986 ; DE BEERS CONSOLIDATED DIAMOND MINES LIMITED ANNUAL REPORT 1979 ; DE BEERS ANNUAL REPORT 1981 ; DE BEERS ANNUAL REPORT - 1982 ; DE BEERS ANNUAL REPORT-1983 ; DE BEERS CONSOLIDATED MINES LIMITED ANNUAL REPORT 1980 ; DEBEERS CONSOLIDATED MINES LIMITED ANNUAL REPORTS: 1971 - 1977 ; DE BEERS CONSOLIDATED DIAMOND MINES LIMITED ANNUAL REPORT 1978 ; DE BEERS CONSOLIDATED MINES LIMITED ANNUAL REPORTS: 1971 - 1976

General comments

Subject category Comment text
Deposit ORIGINAL SURFACE AREA COVERED 32 ACRES TOTAL DEPTH OF PIPE NOT AVAILABLE. CURRENT MINING PLANS INDICATE THAT OPERATIONS WILL BE EXTENDED WELL BELOW PRESENT MINING LEVEL OF 760 METERS.
Deposit INFORMATION MERGED FROM RECORD NUMBER W027324 ; W028256 ; W028866 ; W028867 ; W030971 ; W032271 ; W033022 ; W033151 ; W033832 ; W044579 ; W055334

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1976 Sweetwood, Charles W. Department of State
Updater 01-JUL-1985 Mccarter, Lorna D Department of State
Updater 01-AUG-1977 Sweetwood, Charles W. Department of State
Updater 01-OCT-1978 Sweetwood, Charles W. 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-JUL-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-JUL-1985 Mccarter, Lorna D Department of State
Updater 01-MAY-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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