Description
Captain T. L. H. Shone
Commodities
PrimaryManganese
SecondaryIron
Commodity typeM
Deposit
Deposit sizeL
WorkingsSurface
Orebody formIRREGULAR
Ore controlGentle Uplift Of Continental Mass; Minor Folding; Erosion; Leaching Of Manganese From Dolomite; Replacement; Manganese Concentration In Shale.
Materials
Ore mineralsJacobsite, Manganite, Todorokite
Geology
Host rockShale
StructureLow Intensity Anticlines And Synclines Regionally (Principally The Maremane Anticline And Dimoten Syncline In General Vicinity Of Gloucester And Bishop Mines). Ore Horizon And Host Rocks Dip And Fold Gently Regionally, But With Dramatic Changes Locally. Occasional Dike Injections. Faulting Insignificant., Folding And Slumping Of The Ore Horizon And Host Rocks Common. Dramatic Dip Changes Locally. Minor Faulting. Ore Horizon Thickness Highly Variable (From Less Than One Meter To Over 15 Meters) Reflecting Erratic Replacement During Manganization.
Tectonic settingPlatform. Possibly Several Tectonic Cycles.
Economic & production
Development statusProducer
First production1929
Discovery year1922
Identification
Deposit ID10079222
MRDS IDW028270
Alternate namesBishop Mine, Gloucester Mine, Paling & Beeshoek Mine
RegionAF
Data scoreB
Coordinates-28.09658, 23.05153
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; 1960ENG & MINING JOUR.,NOV. 1972ASSOC. MANGANESE MINES OF SOUTH AFRICA,LTD,ANNUAL REPORTS. ; ASSOCIATED MANGANESE COMPANY OFFICIALS ; ASSOCIATED MANGANESE MINES ANNUAL REPORT - 1981