Witwatersrand Nigel

Producer in South Africa with commodities Gold, Silver
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. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10304872
MRDS ID W027856
MAS/MILS ID 7910200067
Record type Site
Current site name Witwatersrand Nigel
Related records 10089662

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 28.39315, -26.49659 (WGS84)
Elevation 1800

Site location context

Political divisions (FIPS codes)

South Africa(country)

Africa(continent)

Land(continent)

Geographic areas

Country
South Africa

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Gold Unknown
Pyrite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) 28.39315, -26.49659

Economic information

Ore body information

  • Thickness 3M
    Length 1500M
    Width 300M
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 PLACER
    Type of Orebody #3 SEDIMENTARY
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin OTHER
    Primary Ore Control BEDDING
    Secondary Ore Control LITHOLOGY
    Strike And Dip N45E:
    Date of Last Modification 780808

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Deposit size Medium
Significant Yes
Year of first production 1940
Milling method Hydrometallurgy Unspecified

Mining district

District name Witwatersrand

Mineral rights holdings

Type of mineral rights Federal Lease

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Witwatersrand Nigel, Ltd
    Interest 100
    Home office South Africa
    Year 1981
  • Type Owner
    Owner African Exploration Co. Ltd.
    Interest 100
    Home office South Africa
    Year 1981

Production statistics

  • Year 1992
    Description Production Of Gold Bullion 1 Metric Ton.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1mt

Comments on the production information

  • PRODUCTION IS ONGOING

Reserves and resources

  • Type In-situ
    Estimate year 1993
    Indicated 1000000mt ore
    Demonstrated 1000000mt ore
    Total resources 1000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 8.6 g/mt Gold Major 1993

Comments on the reserve resource information

  • Q-MAT1=MAIN REEF LEADER. SHAFT 7 WITH 1.75 MILLION MT OF ORE SHAFT 10 IS TO BE DEVELOPED FOR 3.51 MILLION MT OF ORE.
  • 1987 PROD.= 35,169 OZ FROM TREATING 442,468 MT ORE. NOT UPDATED FOR THE 1992 AU AVAILABILITY STUDY (ONLY DID MAJOR UG OPERATIONS.

Workings at the site

  • Type of workings Underground
    Overall depth 1000M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method TIMBERED STOPES
    Percent Waste Rock 20.5
    Percent Recovery 100
    Hardness of Rock HARDROCK FISSURED WITH EXCESSIVE WATER
    Number of Shafts 7
    Capacity 770
    Capacity Units MT ORE/DAY
    Unit Production Cost 46.73
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 1
    Year of Information 1982

Comments on other economic factors

  • ETD CONTAINED HISTORICAL INFRASTRUCTURE INVESTMENT.

Reference information

Bibliographic references

  • Production

    MINING JOURNAL, P. 10 (JULY 2, 1993).

  • Deposit

    A SURVEY OF THE MINERAL INDUSTRY OF SOUTH AFRICA,BY R.B.TOOM

  • Deposit

    RAL INFORMATION BULLETIN MR 58,1962,MINER.RES.DIV;DEPT.MINES

  • Deposit

    WITWATERSRAND GOLD,WORLD MINING, MAY,1977,P.50-53.

  • Deposit

    WORLD MINES REGISTER 76-77,MILLER FREEMAN PUB,INC.

  • Deposit

    DETRITAL GOLD,URANIUM,AND PYRITE CONCENTRATIONS RELATED TO S

  • Deposit

    OLOGY IN THE PRECAMBRIAN VAAL REEF PLACER,WITWATERSRAND,SOUT

  • Deposit

    A;W.E.L.MINTER,ECON-GEOL;V-71,#1,1977,P.157-176

  • Deposit

    E/MJ INTERNATIONAL DIRECTORY OF MINING AND MINERAL PROCESSIN

  • Deposit

    TIONS,PUB.BY ENG.AND MIN-JOURN,MCGRAW HILL,N.Y,1976

  • Deposit

    GEOL.SURV,SP.PUBL.18,1972,S.AFRICA

  • Deposit

    MINING ANNUAL REVIEW,PUB.MIN.JOURN;LONDON,1977,P.431-443.

  • Deposit

    MINERAL RESOURCES OF SOUTH AFRICA;GEOL SURV.PUB;EDT;BY C.B.C

  • Deposit

    HAND BOOK 7,1976,FIFTH EDITION,P.39-74,233-240.

  • Deposit

    MINING JOURNAL,QUARTER ENDING,JUNE,1977,P.9

  • Deposit

    THE MINERAL RESOURCES OF THE UNION OF SOUTH AFRICA,GEOL.SUR.

  • Deposit

    9,4TH EDITION

  • Deposit

    WITWATERSRAND MINING PRACTICE,BY WATERMEYER,G.A.AND HOFFENBE

  • Deposit

    PUB.BY THE TRANSVAAL CHAMBER OF MINES,GOLD PRODUCERS COMMITT

  • Deposit

    WITWATERSRAND NIGEL,LTD;ANNUAL REPORT,1975

Reporter information

Type Date Name Affiliation Comment
Reporter 29-AUG-1994 Boyle, Ed U.S. Bureau of Mines

Beyond USGS

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