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Location: 9 km W from Kolwezi, DRC
Commune de DilalaKolweziDRC7188
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Mining scale, mining and mill throughput capaciites.Full profiles of select mines and projects.
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In 2024, a 5% transfer of KCC's equity to the DRC government occurred in accordance with the DRC Mining Code.
The copper-cobalt minerals hosted in rocks of the Neoproterozoic Katangan Basin in the Central African copper belt metallogenic province of the DRC are a classic example of (low energy) sediment-hosted stratiform copper (SSC) ore system deposits. These deposits are economically significant, as they account for approximately 25% of the world’s copper production and known Mineral Reserves being second only to porphyry copper deposits in terms of copper production and the most important global cobalt resource.The copper-cobalt deposits contained in a sedimentary series of rocks are known as the Mines Group in the Katanga sequence and the Roan Group in Zambia. The sediments are shallow-water shales, dolomitic shales, reefal dolomites and possible evaporitic lagoonal mudstones, formed on a platform marginal to a subsiding basin. The rocks are exposed in a series of tightly folded and thrusted anticlines and synclines, which generally trend east-west or southeast and are often overturned to the north. In spite of this deformation overprint, the mineralized zones, although sometimes lenticular along strike and down dip, as well as showing local diapiric forms, display remarkable large-scale continuity within the Mines Group.The Mashamba East has an intact succession of Series de Mines lithologies, which host the copper and cobalt mineralization. Structurally, the lithologies of the Mashamba East strike to the northeast and dip 20° to the northwest in the west and wraps around to strike almost north-south and dip 35° to the east in the eastern portion of the property.Primary mineralization, in the form of sulphides, within the Lower Roan is associated with the DSTRAT (Dolomie Stratifiee) and RSF (Roches Silicieuses Feuilletees) for the OBI (Orebody Inferieure; Lower Orebody) and the SDB (Schistes De Base) and SDS (Schistes Dolomitic Superieur) for the OBS (Orebody Superieure; Upper Orebody) and is thought to be syn-sedimentary in origin. Typical primary copper sulphide minerals are bornite, chalcopyrite, chalcocite and occasional native copper while cobalt is in the form of carrolite. The mineralization occurs as disseminations or in association with hydrothermal carbonate alteration and silicification. Supergene mineralization is generally associated with the levels of oxidation in the subsurface sometimes deeper than 100 m below surface. The most common secondary supergene minerals for copper and cobalt are malachite and heterogenite.
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