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copper ores were quarried

Certain copper ores from the Nchanga Copper Mine in the northern Zambia Copperbelt are refractory with respect to conventional beneficiation techniques This paper reviews recent study of those ores to determine their mineralogy textures and nature of copper occurrence Two suites of refractory ores were selected for study 1 samples of stockpiled ores from an open pit and 2 drill core

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