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Gamsberg

Prospect in South Africa with commodities Lead, Zinc
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Geologic information

Identification information

Deposit ID 10305004
MRDS ID W018942
MAS/MILS ID 7910050014
Record type Site
Current site name Gamsberg
Related records 10073112

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 18.96828, -29.24659 (WGS84)
Location accuracy 5000(meters)
(click for info)

Geographic areas

Country
South Africa

Commodities

Commodity Importance
Lead Secondary
Zinc Primary

Nearby scientific data

Ore Body (1) 18.96828, -29.24659
ListMap

Ore body information

  • Thickness 110M
    Depth to top 1500M
    Width 25M
    Length 5300M
    Area 2300HA
    Field Value
    Type of Orebody #1 STRATIFORM
    Shape of Orebody #1 IRREGULAR
    Type of Orebody #2 SEDIMENTARY
    Primary mode of Origin OXIDATION
    Primary Ore Control FOLDING
    Secondary Ore Control BEDDING
    Type of Wallrock Alter. #1 PYRITIZATION
    Total Surface Area (HA) 2300
    Date of Last Modification 830819

Comments on the geologic information

  • GAMS IRON FORMATION IS SUBDIVIDED INTO A, B. AND C MEMBERS; DIFFERENCES IN THICKNESS ARE ASCRIBED TO FACIES CHANGE, DEFORMATION, AND INTRAFORMATIONAL EROSION.

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Prospect
Commodity type Metallic
Significant Yes
Discovery year 1954
Mining method Open Stope - Sublevel
Milling method Flotation

Mineral rights holdings

Type of mineral rights Unknown

Ownership information

  • Type Owner-Operator
    Owner Gamsberg Zinc Corp. Ltd. (Jv) (Gamzinc)
    Interest 100
    Home office South Africa
    Year 1989
  • Type Owner
    Owner Anglo American Corp. Of South Africa, Ltd.
    Interest 45
    Home office South Africa
    Year 1994
  • Type Owner
    Owner Gold Fields Of South Africa
    Interest 27.5
    Home office South Africa
    Year 1994
  • Type Owner
    Owner O'Okiep Copper Co. Ltd.
    Interest 27.5
    Home office South Africa
    Year 1994

Comments on the ownership information

  • GAMSBERG ZINC CORP. IS A JOINT VENTURE.

Reserves and resources

  • Type In-situ
    Estimate year 1993
    Demonstrated 100,000,000mt ore
    Measured 100,000,000mt ore
    Total resources 100,000,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 7 wt-pct Zinc Major 1993
    Lead Pb 0.5 wt-pct Lead Minor 1993

Comments on the reserve resource information

  • POTENTIAL PROJECT. PAH PB/ZN 89 SHOWS 141,600,000 MT ORE
  • ORE HAS A HIGH MANGANESE CONTENT WHICH MAKES IT HARD TO TREAT BY CONVENTIONAL ELECTROLYTIC PROCESSES.

Workings at the site

  • Type of workings Underground
    Overall depth 950M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method SUBLEVEL 10-43
    Percent Recovery 100
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. UNKNOWN
    Number of Shafts 1
    Slope of Inclines 15
    Number of Inclines 1
    1st Condition of Workings UNKNOWN
    Capacity 2300
    Capacity Units MT ORE/DAY
    Operating Days per Year 312
    Operating Shifts per Day 3
    Year of Information 1989

Comments on other economic factors

  • BETWEEN 1975 AND 1977, ABOUT 9000 TONS OF ORE WERE MINED FROM UNDERGROUND DRIFTS.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 7910050014
USGS Mineral Resources Data System MRDS W018942 MAS references MRDS

Bibliographic references

  • Reserve-Resource

    "GAMSBERG ZINC MINE MOOTED", MINING JOURNAL, LONDON, 14 MAY

  • Reserve-Resource

    1993, V. 320 N. 8224, P. 350.

  • Deposit

    WORLD MINING, MAY 1974, WHAT'S HAPPENING IN WORLD MINING.

  • Deposit

    METALS SOURCEBOOK,ITEM A2624, MAY 21,1973.

  • Deposit

    METALS SOURCEBOOK,ITEM A3830, AUG.13,1973.

  • Deposit

    METALS SOURCEBOOK, ITEM B2861, MAY 20,1974.

  • Deposit

    WORLD MINING, AUG.1977, P.83.

  • Deposit

    MINING JOURNAL, JULY 1,1977,P.5.

  • Deposit

    E/MJ, MARCH 1978,P.247.

  • Deposit

    COAL GOLD&BASE MINERALS OF SOUTHERN AFRICA, PROGRESS AT

  • Deposit

    GAMSBERG, OCT.1975, P.53.

  • Deposit

    COAL GOLD&BASE MINERALS OF SOUTHERN AFRICA, SEPT.1977, P.15.

  • Deposit

    METAL BULLETIN, SEPT.22,1975, P.22.

  • Deposit

    WORLD MINING YEARBOOK, 1977.

  • Deposit

    WORLD MINING, ELECTROLYTIC ZINC RECOVERY, SEPT.1978, PP.92-

  • Deposit

    99.

  • Deposit

    DEGUIRE,M.F., HANNAFORD,A.L AND HARRIS,L. PILOT PLANT OPER-

  • Deposit

    ATION ON GAMSBERG MANGANIFEROUS ZN CONCENTRATES, SME PRE-

  • Deposit

    PRINT NO. 78-B-30, PAPER PRESENTED FEB.28-MARCH 2,1978,

  • Deposit

    LAKEWOOD,COLO.

  • Deposit

    DMA SERIES 1501 MAP, SHEET SH 34-5, SCALE 1:250,000.

  • Deposit

    ANNUAL REPORTS, NEWMONT MINING CORP., 1975-1979.

  • Deposit

    BLACK MOUNTAIN GEARING UP FOR FULL PRODUCTION, IN WORLD MIN-

  • Deposit

    ING, MARCH, 1980, P. 71.

  • Deposit

    BLACK MOUNTAIN MINERAL DEVELOPMENT COMP. (PTY) LIMITED IN

  • Deposit

    FOCUS, IN JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING

  • Deposit

    AND METALLURGY, P. 166.

  • Deposit

    CHADWICK, JOHN R. (ED.) BLACK MOUNTAIN-ANNUAL REVIEW ABOUT

  • Deposit

    $150,000,000 IN WORLD MINING, MARCH 1981, P. 36.

  • Deposit

    MCLAURIN, A.N., GEOCHEMICAL DISPERSION FROM THE GAMSBERG

  • Deposit

    OREBODY, NORTHWESTERN CAPE, SOUTH AFRICA, IN JOURNAL OF

  • Deposit

    GEOCHMICAL EXPLORATION 10, ELSEVIER SCIENTIFIC PUBLISHING

  • Deposit

    COMPANY, NETHERLANDS, 1978, PP. 296-306.

  • Deposit

    PRODUCTION UNDERWAY AT BROKEN HILL, SOUTH AFRICA, MINING MAG

  • Deposit

    AZINE, FEB., 1980, P. 121.

  • Deposit

    ROZENDALL, A.,THE GAMSBERG ZINC DEPOSIT, NAMAQUALAND, IN VER

  • Deposit

    WOERD, W.J., RF., MINERALIZATION IN METAMORPHIC TERRAINS,

  • Deposit

    GEOLOGICAL SOC. OF SOUTH AFRICA SPEC. PUB., 1976.

  • Deposit

    ROZENDAAL, A., THE GAMSBERG ZINC DEPOSIT, SOUTH AFRICA, A

  • Deposit

    BENDED STRATIFORM BASE-METAL SULFIDE ORE DEPOSIT, IN PRO-

  • Deposit

    CEEDINGS OF THE FIFTH QUADRENNIAL IAGOD SYMPOSIUMM VOL. 1

  • Deposit

    STUTTGARD, 1981.

  • Deposit

    WHEATLEY, C.J.V. ASPECTS OF GEOCHEMICAL EXPLORATION IN THE

  • Deposit

    BUSHMANLAND REGION, NORTH-WEST CAPE, SOURCE NOT IDENTIFIED

  • Deposit

    PERSONAL COMMUNICATION WITH STAFF OF THE O'OKIEP COPPER COMP

  • Deposit

    NABABEEP, SOUTH AFRICA.

  • Deposit

    ELECTROLYTIC ZINC RECOVERY FROM MANGANIFEROUS CONCENTRATE,

  • Deposit

    WORLD MINING, SEPT., 1978.

  • Deposit

    PAH REPORT ON GAMSBERG, NOV. 1987.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-AUG-94 Difrancesco, Carl A. U.S. Bureau of Mines