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The objective of this study was to investigate the floatability of a complex Kansanshi mixed copper ore comprising sulphide and oxide minerals with a view to achieving maximum copper recoveries and grades. The major focus of the study was on the use of two different methods of sulphidisation, viz. slug addition and controlled potential ...Web
According to the proportion of oxide minerals and sulfide minerals in ... H. Y., Tong, L. L. & Liu, Y. Y. Research on process mineralogy of oxidized copper ore in Luanshya, Zambia. J. Northeastern ...Web
copper sulphide minerals and 93% of carrollite co uld be recovered from mixed oxide sulphide ore at ambient pH in a laboratory batch flotation experiment. Final concentrate grades after the sulphide flotation stage were 12.2% Cu and 0.38% Co [11]. Flotation processes are typically optimized through changes of reagent dosage and flotationWeb
a Sediment-Hosted Copper–Cobalt Sulphide Ore Laurens T. Tijsseling 1,2, Quentin Dehaine 1,3, Gavyn K. Rollinson 1 and Hylke J. Glass 1,* 1 Camborne School of Mines, University of Exeter, ... For example, for a Zambian concentrator a xanthate collector had superior performance in terms of kinetics, recovery and grade compared to other thiol ...Web
The Munali Ni sulfide deposit, southern Zambia: A multi-stage, mafic-ultramafic, magmatic sulfide-magnetite-apatite-carbonate megabreccia - ScienceDirect …Web
Importance of chalcophile element abundances in determining the sequence of sulfide mineral deposition from monoascendent ore-forming solutions. In Problems of Postmagmatic Ore Deposition, I, 267 – 272. Prague Symposium.Google ScholarWeb
Luanshya copper mine, which located at the southern end of the Zambian Copperbelt, is rich in Sulfide-Oxidized copper ore (Ma et al., 2017b, Sracek et al., 2018). These representative low-grade copper ores and their corresponding isolates are valuable resources for exploring the microbial-mineral interactions to enhance microbial …Web
The Munali Ni sulfide deposit, southern Zambia: a multi-stage, mafic-ultramafic, magmatic sulfide-magnetite-apatite-carbonate megabreccia. Ore Geol. Rev. 90, 553–575 (2017). Google ScholarWeb
The non-sulfide ores comprise: (1) willemite-dominated zones encasing massive sulfide orebodies and (2) oxide-dominated alteration bands, overlying both the sulfide and Zn-silicate orebodies. This study focuses on the Ge, In and Ga distribution in the non-sulfide mineralization, and was carried out on a suite of Kabwe specimens, housed in the ...Web
Sulphide ore is treated via crushing, milling and flotation to produce copper in concentrate. ... Zambia's largest infrastructure investment since the Kariba Dam was constructed in 1959. The operation is based on sophisticated technology – including the world's largest steel-ball mills and the world's largest semi-mobile rope shovels.Web
The δ 18 O and δ 13 C values for Footwall and Ore Shale dolomites in Zambia define two fields in Fig. 14 ... The proposed technology could realize utilization of cobalt-rich copper sulfide ore and effective extraction of cobalt and copper. Persistent late Tonian shallow marine anoxia and euxinia.Web
The Neoproterozoic rocks of the Zambian Copperbelt host world-class sediment-hosted stratiform and stratabound Cu-Co deposits in both fine- and coarse-grained metamorphosed siliciclastic rocks. Ore deposits in the coarse-grained siliciclastics occur below (footwall deposits) and above (hanging-wall deposits) the fine-grained Ore Shale …Web
Attempts have been made to radiometrically date the Cu ± Co mineralization of the Central African Copperbelt for more than 50 years, with ore-related uraninite, brannerite, rutile, Cu- and Co-bearing sulfides, monazite, molybdenite, and micas being the minerals analyzed. Salient results are summarized in Fig. 3. Fig. 3.Web
2008. We studied a number of magmatic Ni–Cu– (PGE) sulfide deposits in two distinct belts in eastern Botswana. The Tati belt contains several relatively small …Web
The Kabanga sulphide deposit now comprises a total mineral resource of 58 million tonnes grading 2.6% nickel. The Musongati laterite deposit comprises an overall resource of 122 million tonnes ...Web
Cores of massive sulphide orebodies are surrounded by oxide zones of silicate ore (willemite) and mineralized jasperoid that consists largely of quartz, willemite, …Web
The most prevalent sulphide minerals found on the Copperbelt are bornite (Cu 5 FeS 4), which is followed by chalcocite (Cu 2 S), then chalcopyrite (CuFeS 2) and covellite (CuS) as well as cobaltiferous pyrite [3]. On the Zambian Copperbelt alone, about 30 million tonnes of metallic copper have been produced sinceWeb
The choice of copper-ore processing technology depends on its composition, i.e., the sulfide, oxide, carbonate, and copper silicate content. Leaders in copper ore processing include Chile, Peru, the United States, Australia, China, Russia, Mexico, Kazakhstan, Zambia, and Congo. Chile accounted for almost a third of global copper …Web
The Munali Ni sulfide deposit, southern Zambia: A multi-stage, mafic-ultramafic, magmatic sulfide-magnetite-apatite-carbonate megabreccia. Ore Geology Reviews . 90, 553-575 Barnes SJ, Mungall JE, Le Vaillant M, Godel B, Lesher CM.Web
Ore in the Kamoa-Kakula deposits (Democratic Republic of Congo) is dominated by fine-grained Cu sulfides disseminated in Cryogenian diamictite matrix and siltstone, commonly with coarsely crystalline sulfide-gangue 'caps' and 'beards' on larger clasts. In addition to sedimentary material, ore-zone matrix contains hypogene Cu …Web
The Zambian Copperbelt forms the southeastern part of the 900-km-long Neoproterozoic Lufilian Arc and contains one of the world's largest accumulations of sediment-hosted stratiform copper mineralization. The Nchanga deposit is one of the most significant ore systems in the Zambian Copperbelt and contains two major economic …Web
This kind of Co occurrence is largely confined to nearby regions of the D.R. Congo and Zambia in the Central African Copperbelt, ... African cobalt-rich copper sulfide ore (CRCS) is an important ...Web
Stratabound epigenetic sulphide Zn–Pb–Cu ore deposits of the Central African Copperbelt in the Democratic Republic of Congo and Zambia are mostly hosted in deformed shallow marine platform carbonates and associated sedimentary rocks of the Neoproterozoic Katanga Supergroup. Economic orebodies, that also contain variable …Web
The recent paper by Sillitoe et al. nicely confirms through Re-Os dating the results of earlier geochronological studies that molybdenite and, by extension, spatially associated (but generally not intergrown) copper sulfide minerals in some Zambian Copperbelt deposits were precipitated in a 50-myr (~ 540–490 Ma) time span during the …Web
The Kitumba IOCG deposit in Zambia has undergone multiple stages of alteration and sulfide formation and subsequent supergene enrichment, with Cu …Web
Abstract. Volcanogenic massive sulfide deposits, also known as volcanic-hosted massive sulfide, volcanic-associated massive sulfide, or seafloor massive sulfide deposits, are important sources of copper, zinc, lead, gold, and silver (Cu, Zn, Pb, Au, and Ag). These deposits form at or near the seafloor where circulating hydrothermal fluids ...Web
Stratabound epigenetic sulphide Zn–Pb–Cu ore deposits of the Central African Copperbelt in the Democratic Republic of Congo and Zambia are mostly hosted …Web
Semantic Scholar extracted view of "The Munali Ni sulfide deposit, southern Zambia: a multi-stage, mafic-ultramafic, magmatic sulfide-magnetite-apatite-carbonate megabreccia" by D. Holwell et al. ... Pentlandite is the dominant Ni-hosting ore mineral in most magmatic sulfide deposits and has conventionally been interpreted as being …Web
Pyrite again dominates the sulfide mineralogy in deposits such as those of the Copperbelt of Zambia, which have a range of copper–iron sulfides (chalcopyrite, bornite), copper sulfides (chalcocite, …Web
Studies of the compositions of coexisting sulphide assemblages from certain Zambian Copperbelt deposits and of their textural relations and host rock environments have been undertaken by routine microscopy and using electron microprobe analysis. ... B.W.: Sulphide mineral zoning in the Baluba Ore body, Zambia. Geol. en Mijnbouw 51, …Web
Cobalt, hosted in siegenite, systematically reported to the middling product during tabling of sized Zn-Pb sulphide ore from Missouri (Mine La Motte-Fredericktown, USA) grading at ~ 0.15% Co. Smith et al. (1976) used a shaking table to concentrate cobalt from Mount Cobalt ore mainly composed of cobaltite (5.93 g.cm −3), erythrite (2.82 g.cm ...Web
The Enterprise nickel deposit (40 Mt of 1.07% Ni) is located on the eastern edge of the Kabompo dome in the North-Western Province of Zambia. The deposit area contains basement schists overlain by ...Web
The paper by Mondillo et al. (2018) looks at 'Critical elements in nonsulfide Zn deposits: A reanalysis of the Kabwe Zn-Pb ores (central Zambia)' where there are both mixed sulfide and non-sulfide ...Web
Metrics. The recent paper by Sillitoe et al. ( 2017) nicely confirms through Re-Os dating the results of earlier geochronological studies that molybdenite and, by …Web
The flotation recovery of sulfide ore in a sedimenthosted copper-cobalt deposit in the Democratic Republic of Congo has been predicted by the correlation of mineralogical data delivered by the ...Web
The Kabwe Zn-Pb deposit (central Zambia) consists of a cluster of mixed sulfide and non-sulfide orebodies. The sulfide ores comprise sphalerite, galena, pyrite, chalcopyrite …Web
The Munali Ni deposit is hosted by a dynamic intrusive mafic-ultramafic system situated within the Zambezi belt in southern Zambia. The deposit comprises Fe-Ni–dominant magmatic sulfides, present as a number of lenticular massive sulfide bodies that display a variety of magmatic and metamorphic sulfide textures.Web
