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Location: 0.5 km NW from Chingola, Zambia
Stand M/1408, Fern AvenuePrivate Bag KCM (c) 2000ChingolaZambia
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July 30 2024 Indian metals-to-oil conglomerate Vedanta said it got approval from the majority of its secured creditors for the demerger of the company into six independent companies.
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Copper mineralisation is zoned, with shallower oxidation and supergene mineralisation (chalcocite, malachite and cuprite and less common native copper, chrysocolla and azurite) giving way to primary chalcopyrite, bornite, and chalcocite with pyrite developed below. In most orebodies average grades are fairly consistent over large areas. In the so-called Chingola Refractory Ore (CRO), low-grade copper oxide mineralisation occurs within the crystal lattice of micas and between the mica plates.Primary mineralisation is hosted within two stratigraphic horizons:the Lower Ore Body (LOB)the Upper Ore Body (UOB) The LOB ranges from a few metres to up to 40 m in thickness and is essentially unfolded and is separated from the UOB by a bedding parallel thrust plane. It can be traced in the NOP over distances in excess of 6km and dips 25° northward for most of its strike length. In the area of the current underground workings, it has been identified to a vertical depth of 900 m. However, it rapidly thins down-dip due to the development of arenaceous facies within the LOB, which limits the future potential of the mine. The LOB is hosted primarily in the Lower Banded Shale and Transition Arkose and has an assay footwall, which may extend into the stratigraphic unit below. Mineralisation in the Transition Arkose is nuggety making grade estimations challenging. Overall the LOB contains average in situ grades from 3% to 5%TCu.The UOB is some 30 m to 40 m stratigraphically above the LOB and lies within the Feldspathic Quartzite and to a lesser extent in the Upper Banded Shale. It is 10 m to 40 m thick on average and in places is deformed by tight isoclinal folding. The UOB contains from 2%TCu to 3%TCu and has been traced for over 5 km along strike to a depth of 600 m. Cobalt mineralisation with grades of up to 0.7%TCo occurs within the UOB primarily in the Feldspathic Quartzite (TFQ) with an assay hanging wall that extends into the overlying Upper Banded Shale.
