Base metal sulfide deposits are known to exist in the Pacific ocean and in the red sea. Sufficient data have been generated to allow a preliminary assessment of potential processing techniques. The coarse nature of the Pacific ocean sulfide minerals indicates that conventional flotation will enable separate smelter-grade copper and zinc concentrates to be prepared. On-land smelting would produce these metals. The extremely fine-grained nature of the red sea deposits precludes preparation of smelter-grade flotation concentrates. The Red Sea concentrates would be treated for metals recovery by a chloride-based hydrometallurgical method.
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