Copper mining and extraction sulfide ores
Gold, recognizable by its yellowish cast, is one of the oldest metals used by humans. as far back as the neolithic period, humans have collected gold from stream beds, and the actual mining of gold can be traced as far back as 3500 b.c. , when early egyptians the sumerian culture of mesopotamia used mined gold to craft elaborate jewelry, religious artifacts, and utensils such as goblets.Stage 3 roasting at this stage of the process, the chemical reactions begin. they convert the copper minerals into copper metal. we can illustrate the types of process using the example of chalcopyrite – cufes 2.from the formula, it is clear that iron and sulfur have to be removed in order to produce copper.