| Location: | Eastern Cape, South Africa, Africa |
| Lat / long: | -29.04763, 25.221 |
| dep_id: | 10079221 |
| mrds_id: | W028269 |
| Commodity type: | metallic |
| Major mineral: | Manganese |
| Minor mineral: | Iron |
| Operation type: | Unknown |
| Production size: | Large ammount of material produced |
| Development status: | Producer |
| ore: | Bixbyite |
| gangue: | Clay |
| orebody_fm: | TABULAR/BLANKET |
| work_type: | Surface/Underground |
| conc_proc: | Indications Are Of 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; Man Ganiferous 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: | Volcanic Rock (Aphanitic) |
| arock_type: | Volcanic Rock (Aphanitic) |
| Structure: | Low Intensity Anticlines And Synclines Regionally. Faulting Intermittent And Of Limited Magnitude., The Ore-Bearing Structure Is A North-Trending Asymmetrical Anticline Planed Off By Erosion. Dips Are Moderately Variable On The Western Limb ( 20 - 25 Degrees West ) And Broken By Faulting, And Erratic, On The Eastern Limb. |
| tectonic: | Platform; Possibly Several Tectonic Cycles |
| Year first produced: | 1955 |
| disc_yr: | 1941 |
| discr: | L. G. Boardman |
| 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:: ANNUAL RPTS OF ASSOC MANGANESE MINES OF SOUTH AFRICA LTD. ; ASSOCIATED MANGANESE COMPANY OFFICIALS ; ASSOCIATED MANGANESE MINES ANNUAL REPORT - 1981
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