| Location: | Eastern Cape, South Africa, Africa |
| Lat / long: | -27.79659, 23.00154 |
| dep_id: | 10079056 |
| mrds_id: | W027877 |
| Commodity type: | metallic |
| Major mineral: | Iron |
| Operation type: | Unknown |
| Production size: | Large ammount of material produced |
| Development status: | Producer |
| gangue: | Shale |
| orebody_fm: | IRREGULAR, TABULAR/BLANKET |
| work_type: | Surface |
| alteration: | (See Process Of Concentration Or Enrichment. |
| conc_proc: | C.A.Strauss, Geological Survey, Holds That Orebodies May Have Originated By Both Hypogene And Supergene Agencies. Initially, The Silica Laminae Replaced By Iron-Rich Talc And Brecciated Banded Ironstones Converted To Talc-Cemented Breccias. This Would Have Been Followed By Dissociation Of The Iron-Rich Talc And Precipitation Of Secondary Hematite. Finally, Silica And Talc Substituted By Calcite And Hematite Brecciation Permitted Calcite Injection. |
| ore_ctrl: | Gentle Uplift Of Continental Mass; Folding; Faulting; Alteration; Replacement; Iron Concentration And Secondary Enrichment. |
| Reporter: | Mccarter, Lorna D, Mccarter, Lorna D., Sweetwood, Charles W. |
| hrock_unit: | 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 |
| hrock_type: | Dolomite |
| arock_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. |
| Year first produced: | 1955 |
| References: |
- Deposit:: MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA; PELLETIER, R.A. 1964
- Deposit:: MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, FIFTH EDITION, HANDBOOK 7 ; 1976
- Deposit:: ISCOR ANNUAL REPORTS; 1973 - 1977 ISCOR BROCHURE (PUBLISHED BY THOMSON PUBLICATIONS SOUTH AFRICA (PTY) LIMITED; CIRCA 1975) SOUTH AFRICAN MINING & ENGINEERING JOURNAL; MAY 197
- Production:: ISCOR ANNUAL REPORTS ; ISCOR ANNUAL REPORT-1986 ; ISCOR ANNUAL REPORT-1982 ; ISCOR ANNUAL REPORT-1983 ; ISCOR ANNUAL REPORT - 1984 ; ISCOR ANNUAL REPORT - 1985 ; ISCOR ANNUAL REPORT 1980 ; ISCOR ANNUAL REPORT - 1981 ; ISCOR ANNUAL REPORT, 1979 ; ISCOR ANNUAL REPORT, 1978
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