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Le gisement de Kinsenda (sud-est du Shaba, Zaire): une concentration cuprifere stratoide dans les formations detritiques du Roan (Proterozoique superieur)

par Dejonghe, Léon ;Ngoyi, Louise Kyalwe K.
Référence Chronique de la recherche minière, 63, 521, page (19-37)
Publication Publié, 1995-12

Article révisé par les pairs

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Résumé :

The cupriferous stratabound deposit at Kinsenda, situated at the SE extremity of the NW district of Shaba, Zaire, is hosted in the siliciclastic Mutonda Formation of the Lower Roan. The Mutonda Formation has been divided into several distinct members among which the predominantly coarse-grained and conglomeratic basal Lubembe Member rests unconformably on the basement. The Luina Dome is dominantly granitic in nature and belongs to the Bangweulu block. It has been dated by U-Pb on zircon at 1,882 +23/-19 Ma and also records an event at 526 ± 250 Ma. Moreover, Sr isotopes show that the basement behaved as an open system during the Lufilian orogeny, leading to hydrothermal alteration of the overlying sediments and of their enclosed Cu mineralization.