Commodities
PrimaryManganese
SecondaryIron
Commodity typeM
Deposit
Model242: Sedimentary Mn
Deposit sizeL
WorkingsSurface
Orebody formIRREGULAR
Ore controlGentle Uplift Of Continental Mass; Minor Folding And Faulting; Erosion; Manganiferous Solutions Circulated Through Tectonically Disturbed Banded Ironstone (Syngenetically) To Give Rise To Metasomatic Replacement Of The Country Rock With Manganese Along Favorable Layers.
Geology
Host rockIron Formation
Associated rockVolcanic Rock (Aphanitic)
StructureLow Intensity Anticlines And Synclines Regionally. Post-Transvaal System Dike Intrusives (Granitic) Occur Intermittently. Faulting Intermittent And Of Limited Magnitude., Orebodies Occur In N - S Trending Asymmetrical Syncline. Dips Gentle, Though Variable. Minor Faulting. Basal Ore Horizon (Bottom Orebody) Massive. Major Dike Intrusive Cuts Through (But Does Not Control) Ore Generally In The Center Of The Deposit. Recent, Surface, Sand Fully Masks Off Visible Presence Of The Underlying Formations. Topography Flat.
Tectonic settingPlatform; Possibly Several Tectonic Cycles.
Economic & production
Development statusProducer
First production1959
Discovery year1950
Identification
Deposit ID10107356
MRDS IDW028037
RegionAF
Data scoreA
Coordinates-27.21329, 22.95152
References
MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, FIFTH EDITION, HANDBOOK 7 , DEPARTMENT OF MINES, GEOLOGICAL SURVEY; 1976MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA; PELLETIER, R. A.; 1964THE MANGANESE DEPOSITS OF THE UNION OF SOUTH AFRICA, HANDBOOK 2 , DEPARTMENT OF MINES, GEOLOGICAL SURVEY; 1960SOUTH AFRICAN MANGANESE AMCOR LIMITED ANNUAL REPORTS, 1974 - 1976 , AND SOUTH AFRICAN MANGANESE AMCOR LIMITED BROCHURE; CIRCA 1976. AFTER 1976: PRESS RELEASES & SOUTH AFRICAN MINERALS BUREAU ; TOTALS HAVE BEEN ESTIMATED FROM TOTAL COUNTRY PRODUCTION OF MANGANESE AS RELEASED BY THE MINERALS BUREAU AND VERBAL INFORMATION RECEIVED FROM SAMANCOR OFFICIALS.