Copper

8700 BCE

Copper

The book of science

Tom Sharp

Middle East elements

Copper

Atomic number 29

Copperness

Bronze, copper with one-tenth tin, is typically harder and less brittle than wrought iron, but iron was cheaper to mine and process. Bronze doesn’t rust like iron, but forms a protective surface layer of copper oxide or copper carbonate.

This ancient date represents not when ancient man first discovered copper but the first evidence that of it that modern man discovered.

See also in The book of science:

Readings on wikipedia:

Other readings: