Chalcopyrite (or copper pyrite), looks like, and is
easily confused with Pyrite , FeS2. Chalcopyrite is
one of the minerals refered to as "Fool's Gold"
because of its bright golden color. But real gold is
a more buttery yellow and is ductile and malleable.
As an ore od copper, the yield of chalcopyrite is rather
low in terms of atoms per molecule. It is only 25%,
compared to other copper minerals such as chalcocite
, Cu2S - 67%; cuprite , Cu2O - 67%; covellite, CuS -
50% or bornite Cu5FeS4 - 50%. However the large quantities
and widespread distribution of chalcopyrite make it
the leading source of copper. Chalcopyrite is a common
mineral and is found in almost all sulfide deposits.
Fine crystals of chalcopyrite have a unique character
and can add to anyone's collection