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Dreyers Pan 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. Alteration
  7. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10089199
MRDS ID W014763
Record type Site
Current site name Dreyers Pan Mine

Geographic coordinates

Geographic coordinates: 17.01827, -29.57993 (WGS84)
Relative position NORTH OF THE TOWN OF KLEINZEE; ABOUT 75 KILOMETERS WEST OF THE O'OKIEP COPPER MINE AND PLANT (NEAR SPRINGBOK, NAMAQUALAND)

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

Alteration

  • (Local) None

Analytical data

Result DIAMOND RECOVERIES CURRENTLY RANGE BETWEEN 0.394 - 0.455 CARATS PER TON OF "TERRACE" MATERIAL TREATED. GEM DIAMONDS COMPRISE AN ESTIMATED 90 PERCENT OF RECOVERIES
Result INDUSTRIAL DIAMONDS 10 PERCENT.

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Sand and Gravel
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) 17.01827, -29.57993
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Tertiary - To - Recent Beach Sands; Unconsolidated
Type of structure Local
Structure description Diamondiferous Terraces In Tertiary Beach Sands

Ore body information

  • General form IRREGULAR
    Dip 0 - 2 DEG
    Thickness 1.5M
    Length 300000M
    Width 500M
    Depth to top 15M
    Depth to bottom 16.5M

Controls for ore emplacement

  • Beach Sands With Concentrations Of Transported And Redeposited Diamonds.

Economic information about the deposit and operations

Development status Producer
Commodity type Non-metallic
Deposit size Large
Significant No
Discovery year 1925
Discoverer W. Carstens
Year of first production 1925

Mining district

District name Namaqualand Alluvial Diamond Deposits

Ownership information

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

Production statistics

  • Year 1976
    Material DIA
    Accuracy Accurate
    Description Ap_Grade: ^Gem Diamonds 90%
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Diamond Gemstones 90wt-pct
  • Year 1980
    Period 1973-1980
    Material DIA
    Accuracy Accurate
    Description Cp_Grade: ^Gem: 90%
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Diamond Gemstones 90wt-pct

Comments on the production information

  • PRODUCTION INCLUDED IN NAMAQUALAND DIVISION MINES FROM 1981 ONWARDS. ; PRODUCTION INCLUDED IN NAMAQUALAND DIVISION MINES FROM NOW ON ; 1977 OVERBURDEN TOTAL REVISED FROM 11,399,264 TO 11,731,517 METRIC TONS, RESULTING IN TOTAL CUMULATIVE FIGURE OF 46,814,804 TONS FOR 1978.

Comments on the workings information

  • OPEN PIT MINING, USING DIESEL - POWERED SCRAPERS, DOZERS AND FRONT/END LOADERS; PITS LOCATED 100 - 150 METERS SEAWARD OF HIGH TIDE LEVEL, AND 15 - 20 METERS BELOW IT; PITS PROTECTED BY SEAWALLS COMPRISED OF OVERBURDEN AND DEWATERING PUMPS; AVERAGE PIT MEASUREMENTS: 300 X 300 METERS PER SINGLE MINING AREA.

Comments on development

  • MILL.CAP: 1.5 MIL. MET. T/YR. 1974 ; ECON.COM: LARGE SCALE OPEN PIT MINING PLAN IN TERRACE ALLUVIUM UNDERLYING BEACH SANDS. 2 - SHIFT OPERATION DAILY (6 DAYS/WEEK). ONE OF WORLD'S LARGEST SOURCES OF GEM DIAMONDS (WITH ANNEX KLEINZEE MINE). OVERBURDEN TO ORE RATION: MAXIMUM 4:1

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    MINING MAGAZINE; OCTOBER 1976

  • Deposit

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

  • Deposit

    DE BEERS CONSOLIDATED MINES LIMITED, ANNUAL REPORT.

  • Deposit

    ENGINEERING & MINING JOURNAL, 1975.

  • Deposit

    DEBEERS CONSOLIDATED MINES LIMITED, 1972, ANNUAL REPORT, NOVEMBER 1972.

  • Production

    DE BEERS CONSOLIDATED MINES LTD ANNUAL REPORTS ; DE BEERS CONSOLIDATED DIAMOND MINES LIMITED ANNUAL REPORT 1979 ; DE BEERS CONSOLIDATED MINES LIMITED 1980 ANNUAL REPORT ; DEBEERS CONSOLIDATED MINES LIMITED ANNUAL REPORTS: 1973 - 1977 ; DE BEERS CONSOLIDATED MINES LIMITED ANNUAL REPORT 1978 ; DE BEERS CONSOLIDATED MINES LIMITED ANNUAL REPORTS: 1973 - 1976

General comments

Subject category Comment text
Deposit INTERMITTENT OCCURRENCES WITHIN 300 KM BELT ALONG WEST COAST OF SOUTH AFRICA (IMMEDIATELY SOUTH OF SOUTHWEST AFRICA)
Deposit INFORMATION MERGED FROM RECORD NUMBER W027330 ; W028257 ; W028864 ; W028865 ; W030972 ; W033802

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-1985 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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