Copper extraction from chalcocite

A single metal may be extracted from several minerals. Thus there are many minerals of copper, such as chalcocite, bornite, chalcopyrite, cuprite, native copper, and malachite one or more of these may occur in an individual deposit. Also, more than one metal may be obtained from a single mineral stannite, for example, yields both copper and tin. A mineral deposit, therefore, may yield several metals from different minerals. 

Many desirable chemical reactions, including a large number that are central to hving systems, are nonspontaneous as written. For example, consider the extraction of copper metal from the mineral chalcocite, which contains CU2S. The decomposition of CU2S to its elements is nonspontaneous ... 

Analyze and Conclude A mining company has two possible sources of copper chalcopyrite (CuFeS2) and chalcocite (CU2S). If the mining conditions and the extraction of copper from the ore were identical for each of the ores, which ore would yield the greater quantity of copper Explain your answer. 

Comment on the feasibility of extracting copper from its ore chalcocite (CU2S) by heating ... 

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