Copper is one of the oldest known metals and is the 25th most abundant element in the Earth’s crust.
The words ‘aes Cyprium’ appeared in Roman writings describing copper, to denote that much of
the metal at the time came from Cyprus. Refinement of copper metal dates back to 5000 BC. The
metal by itself is soft, but when mixed with zinc produces brass and when mixed with tin produces
bronze. Copper is malleable, ductile, and a good conductor of electricity. In its natural state, it is a
reddish solid with a bright metallic luster.