| Location: | Eastern Cape, South Africa, Africa |
| Lat / long: | -27.21329, 22.95152 |
| dep_id: | 10107356 |
| mrds_id: | W028037 |
| Commodity type: | metallic |
| Major mineral: | Manganese |
| Minor mineral: | Iron |
| Operation type: | Unknown |
| Production size: | Large ammount of material produced |
| Development status: | Producer |
| orebody_fm: | IRREGULAR |
| work_type: | Surface |
| model: | 242: Sedimentary Mn |
| conc_proc: | Indications Are Of A Syngenetic Origin, With Subsequent Supergene Enrichment And Replacement. The Distinctly Layered Stratiform Orebodies Have Been Conformably Folded With The Host Rock. The Manganiferous Beds Were Probably Deposited As A Primary Sedimentary Mixture Of Manganese Hydroxide And Manganese And Calcium Carbonates, With Localized Iron Hydroxide And Calcium - Magnesium Carbonate. |
| ore_ctrl: | Gentle 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. |
| Reporter: | Sweetwood, Charles W., Mccarter, Lorna D, Mccarter, Lorna D. |
| hrock_type: | Iron Formation |
| arock_type: | Volcanic Rock (Aphanitic) |
| Structure: | Low 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: | Platform; Possibly Several Tectonic Cycles. |
| Year first produced: | 1959 |
| disc_yr: | 1950 |
| References: |
- Deposit:: MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, FIFTH EDITION, HANDBOOK 7 , DEPARTMENT OF MINES, GEOLOGICAL SURVEY; 1976
- Deposit:: MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA; PELLETIER, R. A.; 1964
- Deposit:: THE MANGANESE DEPOSITS OF THE UNION OF SOUTH AFRICA, HANDBOOK 2 , DEPARTMENT OF MINES, GEOLOGICAL SURVEY; 1960
- Production:: SOUTH 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.
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