Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
| one publication added to basket [311575] |
Paleoproterozoic manganese and base metals deposits at Kisenge-Kamata (Katanga, DR Congo)
De Putter, T.; Liégeois, J.-P.; Dewaele, S.; Cailteux, J.; Boyce, A.; Mees, F. (2018). Paleoproterozoic manganese and base metals deposits at Kisenge-Kamata (Katanga, DR Congo). Ore Geology Reviews 96: 181-200. https://dx.doi.org/10.1016/j.oregeorev.2018.04.015
In: Ore Geology Reviews. Elsevier: Amsterdam. ISSN 0169-1368; e-ISSN 1872-7360, meer
|  |
| Trefwoord |
|
| Author keywords |
Katanga; Mn carbonate ore; Orosirian; Kasai block; Intracontinentalgraben basin |
| Auteurs | | Top |
|
- Cailteux, J., meer
- Boyce, A.
- Mees, F., meer
|
|
| Abstract |
The Kisenge-Kamata manganese deposit (Katanga, D.R. Congo) belongs to a group of Paleoproterozoic sedimentary manganese ore occurrences that have been recognized for various parts of Africa. It is a relatively small deposit with total estimated reserves of ∼12 Mt ore, but it is of major importance for understanding key aspects of the geology of the Kasai Block of the Congo Craton. The available constraints indicate that the deposit formed in the 2.0–1.9 Ga time interval, in the Orosirian period. The manganese-rich facies of the Kisenge-Kamata deposits range in composition from manganese carbonate rocks to non-calcareous deposits dominated by manganese-rich garnet. Associated rocks are mainly grey graphitic shales. The Kisenge-Kamata sediments are significantly enriched in Cu, Co, Ni, Zn and other accessory metals (V, Mo, Ga). Field constraints and geochemical data suggest that the Kisenge-Kamata sediments were probably deposited in a relatively small intracratonic basin (graben) within the Kasai Block, with an inlet allowing periodical access for ocean water influx carrying Mn, REE and other metals. Primary carbonate ore has relatively low δ13C (−3 to −6‰) and high δ18O (+13 to +20‰) values, confirming their derivation from marine fluids. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
