| Location: | Eastern Cape, South Africa, Africa |
| Lat / long: | -27.32994, 22.86819 |
| dep_id: | 10080051 |
| mrds_id: | W031002 |
| Commodity type: | metallic |
| Major mineral: | Manganese |
| Trace mineral: | Iron |
| Operation type: | Unknown |
| Production size: | Large ammount of material produced |
| Development status: | Producer |
| ore: | Braunite |
| orebody_fm: | TABULAR/BLANKET IRREGULAR |
| work_type: | Unknown |
| conc_proc: | Indications Point To Syngenetic Origin, With Subsequent Supergene Enrichment And Replacement. The Distinctly Layered Stratiform Orebodies Have Been Conformably Folded With The Country Rock. The Manganiferous Source 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: | Original Manganiferous Sediments Subjected To Uplift, Erosion, Resulting In Solution, Transport & Concentration Of Manganese In Banded Ironstone. |
| Reporter: | Mccarter, Lorna D. |
| hrock_type: | Volcanic Rock (Aphanitic) |
| arock_type: | Volcanic Rock (Aphanitic) |
| Structure: | The Basin Is About 15 Km Wide & Has Been Gently Folded Into A Large Synclinal Structure., Local Normal Faults (Intruded By Gabbro Dikes) Cause Offsets Of Orebody. |
| tectonic: | Platform; Possibly Several Tectonic Cycles |
| Year first produced: | 1979 |
| References: |
- Analytical Data:: SRC.REF: MANGANESE-A MINERAL COMMODITY REVIEW: SOUTH AFRICA DEPT OF MINES, MINERALS BUREAU, REPT NO 53, 1979
- Deposit:: DEPT. OF MINES, GEOLOGICAL SURVEY OF SOUTH AFRICA, 1976, MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, 5TH EDITION, HANDBOOK 7.
- Deposit:: PELLETIEN, R.A, 1964, MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA.
- Deposit:: DE VILLIENS, P.R., THE GEOLOGY AND MINERALOGY OF THE KALAHARI MANGANESE FIELD NORTH OF SISHEN.
- Deposit:: DEPT OF MINES, GEOLOGICAL SURVEY OF SOUTH AFRICA, 1960, THE MANGANESE DEPOSITS OF THE UNION OF SOUTH AFRICA, HANDBOOK 2.
- Other Database:: ISMI
- Production:: MIDDELPLAATS LTD ANNUAL REPORT. GRADES FROM MINERALSBUREAU MANGANESE COMMODITY REVIEW, CURRENT YEAR.
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