Commodities
PrimaryGold
SecondaryRhodium, Sulfur-Pyrite, PGE, Silver, Platinum, Iridium, Ruthenium, Osmium
TertiaryUranium
Commodity typeM
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
Materials
Ore mineralsGold, Iridium, Sperrylite
Geology
Host rockQuartzite,Shale,Conglomerate · Upper Elsburg Conglomerates And Quartzites;Karroo System Conglomerates And Shales
Associated rockVolcanic Rock (Aphanitic) · Ventersdorp System-Lava
StructureUnique Continuity Of Gold - Bearing Horizons Over Extended Area, Though Well Marked By Faulting, Folding And (Locally) Erosion And Redeposition Of Overlying Sediments., Gentle Dip Regionally, With Folds And Faults Locally. Overlying Lavas, Quartzites And Conglomerates Are Massive
Tectonic settingPlatform
AlterationNone
Economic & production
Development statusProducer
First production1956
Identification
Deposit ID10071450
MRDS IDW014848
RegionAF
Data scoreA
Coordinates-27.91322, 26.73482
References
FREE STATE GEDULD MINES LIMITED, ANNUAL REPORT 1975MINERAL RESOURCES OF SOUTH - CENTRAL AFRICA; PELLETIER, R. A.; 1964"THE ORANGE FREE STATE GOLDFIELD" (ANGLO AMERICAN CORPORATION OF SOUTH AFRICA LIMITED); 1960ANGLO AMERICAN CORPORATION OF SOUTH AFRICA LIMITED; ANNUAL REPORTS, 1974 AND 1975MERTIE, 1969, ECONOMIC GEOLOGY OF PLATINUM METALS: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 630, P. 45-48.COUSINS, 1973, PLATINOIDS IN THE WITWATERSRAND SYSTEM: JOURNAL SOUTH AFRICA INST. MINING AND METALL., V. 73, NO. 6, P. 3-5.WAGNER, 1929, PLATINUM DEPOSITS AND MINES OF SOUTH AFRICA: STRUIK (PTY) LTD., CAPETOWN, 1973, P. 32-40.FEATHER, 1976, MINERALOGY OF THE PLATINUM GROUP MINERALS IN THE WITWATERSRAND: ECONOMIC GEOLOGY, V. 71, NO. 7.PARK AND MACDIARMID, 1970, ORE DEPOSITS.MINING JOURNAL, 1977, V. 288.SOUTH AFRICAN GOLD SHARES; IVOR JONES, ROY AND CO., INC., JOHANNESBURG; 1975 MINING JOURNAL QUARTERLY REVIEW OF SOUTH AFRICAN GOLD SHARES, VOL. 19, NO. 1; MAY 197ANALYSES OF WORKING RESULTS, CHAMBER OF MINES OF SOUTH AFRICA (CURRENT YEAR) ; CHAMBER OF MINES ANALYSIS OF WORKING RESULTS - 1984 ; CHAMBER OF MINES ANALYSIS OF WORKING RESULTS - 1985 ; ANALYSES OF WORKING RESULTS, CHAMBER OF MINES OF SOUTH AFRICA - 1980 ; 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 1978 ; ANALYSIS OF WORKING RESULTS, CHAMBER OF MINES OF SOUTH AFRICA. JANUARY - DECEMBER 1979 ; ANALYSIS OF WORKING RESULTS, CHAMBER OF MINES OF SOUTH AFRICA, JANUARY-DECEMBER 1977