Description
Dr. R. Krahmann, West Witwatersrand Areas Limited
Commodities
PrimaryGold
SecondaryPGE, Silver
TertiarySulfur, Sulfuric Acid, Sulfur-Pyrite
Commodity typeB
Deposit
Model193: Quartz pebble conglomerate Au-U (BC name is Paleoplacer U-Au-PGE-Sn-Ti
Deposit sizeL
WorkingsUnderground
Orebody formTABULAR/BLANKET
Ore controlGentle Uplift Of Continental Mass; Erosion; Peneplanation; Folding; Faulting; Volcanicity; Dike Injection And Build-Up Of Younger Sediments.
Geology
Host rockQuartzite,Shale,Conglomerate · Transvaal System Shales (Pretoria Series), Dolomite (Dolomite Series) And Conglomerates (Black Reef Series);Witwatersrand System (Upper Division)-Quartzites, Shales, Grits, Conglomerates And Carbon Granules
Associated rockVolcanic Rock (Aphanitic) · Ventersdorp System-Lava
StructureUnique Continuity Of Gold-Bearing Horizons Over Extended Area, Though Well Marked By Dikes, Faulting, Early Erosion And Redeposition Of Overlying Sediments., Steeply Dipping Compared To Most Other Measured Occurrences In This General Area. Faulting Limited, But Minor Folding And Notable Undulation Of The Beds Are Characteristic Locally. Intrusive Dikes Penetrate And Dilute Minable Ore Horizons. A Well-Marked, And Incompetent, Tuff Overlies The Ventersdorp Contact Reef. Lavas And Dolomites Are Massive.
Tectonic settingPlatform
AlterationNone
Economic & production
Development statusProducer
First production1968
Discovery year1932
Identification
Deposit ID10079045
MRDS IDW027860
RegionAF
Data scoreA
Coordinates-26.3966, 27.60146
References
MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, FIFTH EDITION, HANDBOOK 7 ; 1976MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA; PELLETIER, R.A.; 1964GOLD FIELDS OF SOUTH AFRICA LIMITED, ANNUAL REPORTS 1974 - 1977MERTIE, 1969, ECONOMIC GEOLOGY OF THE PLATINUM METALS: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 630.MINING JOURNAL, 1977, DEVELOPMENT AND MILLING: V. 288.PARK AND MACDIARMID, 1970, ORE DEPOSITS: FREEMAN AND CO.KLOOF GOLD MINING COMPANY, 1977, ANNUAL REPORTS.KLOOF GOLD MINING COMPANY, 1976, ANNUAL REPORTS.KLOOF GOLD MINING COMPANY, 1975 ANNUAL REPORTS.KLOOF GOLD MINING COMPANY, 1974, ANNUAL REPORTS.IVOR JONES, ROY & COMPANY, INC., SOUTH AFRICAN GOLD SHARES.KLOOF GOLD MINING COMPANY, COMPANY HISTORY.KLOOF GOLD MINING COMPANY, COMPANY GEOLOGY AND MINING PLAN.CHAMBER OF MINES OF SOUTH AFRICA ; CHAMBER OF MINES ANALYSIS OF WORKING RESULTS - 1984 ; CHAMBER OF MINES ANALYSIS OF WORKING RESULTS - 1985 ; CHAMBER OF MINES ANALYSIS OF WORKING RESULTS-1986 ; CHAMBER OF MINES OF SOUTH AFRICA - ANALYSIS OF WORKING RESULTS - 1981 ; CHAMBER OF MINES ANALYSIS OF WORKING RESULTS-1982 ; CHAMBER OF MINES ANALYSIS OF WORKING RESULTS-1983 ; ANALYSIS OF WORKING RESULTS, CHAMBER OF MINES OF SOUTH AFRICA. JANUARY - DECEMBER 1979 ; ANALYSES OF WORKING RESULTS, CHAMBER OF MINES OF SOUTH AFRICA - 1980 ; ANALYSIS OF WORKING RESULTS, CHAMBER OF MINES OF SOUTH AFRICA. JANUARY - DECEMBER 1978