User:WriterHound/Copper ores

Name	Formula	% Copper when pure
Chalcopyrite	CuFeS2	34.5
Chalcocite	Cu2S	79.8
Covellite	CuS	66.5
Bornite	2Cu2S•CuS•FeS	63.3
Tetrahedrite	Cu3SbS3 + x(Fe,Zn)6Sb2S9	32-45
Malachite	CuCO3•Cu(OH)2	57.3
Azurite	2CuCO3•Cu(OH)2	55.1
Cuprite	Cu2O	88.8
Chrysocolla	CuO•SiO2•2H2O	37.9
Principal Copper-bearing Minerals