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WriterHound/Copper ores
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Name
Formula
% Copper
when pure
Chalcopyrite
CuFeS
2
34.5
Chalcocite
Cu
2
S
79.8
Covellite
CuS
66.5
Bornite
2Cu
2
S•CuS•FeS
63.3
Tetrahedrite
Cu
3
SbS
3
+ x(Fe,Zn)
6
Sb
2
S
9
32-45
Malachite
CuCO
3
•Cu(OH)
2
57.3
Azurite
2CuCO
3
•Cu(OH)
2
55.1
Cuprite
Cu
2
O
88.8
Chrysocolla
CuO•SiO
2
•2H
2
O
37.9
Principal Copper-bearing Minerals
[1]
^
Samans, Carl H.
Engineering Metals and their Alloys
MacMillan 1949