| Host rock: | Sand And Detrital Material;Kalahari Beds; Limestone, Calcrete, Clay & Boulders.;Transvaal System, Pretoria Series (Daspoort & Timeball Hill Stages): Quartzite, Shale, Conglomerates & Hematite Ores.;Transvaal System, Dolomite Series: Jaspilite, Shale, Breccia, Dolomite, Manganese And Hematite Ores |
| Host type: | Dolomite |
| Associated type: | Andesite |
| Structure: | Timeball Hill And Daspoort Stages Of Pretoria Series (Shales, Conglomerates, Quartzites, Hematite Ores And Andesitic Lava) Unconformably Overlie Dolomite Series (Banded Hematite, Jaspilite, Shale, Breccia, Manganese And Dolomite). Quaternary To Tertiary Kalahari Beds And Superficial Deposits Unconformably Overlie Pretoria Series., Folding And Refolding Have Resulted In Local Anticlines, Synclines, Domes And Depressions. Although No Major Faulting On A Regional Scale Is Known, Local Normal And Trough Faults Occur. Surface Terrain Flat Except For Low - Lying Gamagara Hills. |
| Tectonic: | Platform. Possibly Several Tectonic Cycles. |
| Alteration processes: | (See Process Of Concentration Or Enrichment. |