
Copper Ores | Article about Copper Ores by The Free …
Based on texture, ores are divided into (1) massive ores, which have a copper content of more than 3 percent and which are suitable for direct smelting (content of other metals is commercially insignificant), and (2) disseminated ores (average copper content, 1-2 percent; low copper content, 0.4-1.0 percent), which are concentrated by means of ...