Chalcopyrite

Chalcopyrite is the main ore of copper. It is mostly copper iron sulfide. It is also known as peacock ore or peacock copper. It is often mistaken for bornite.

Chalcopyrite Media

The unit cell of chalcopyrite. Copper is shown in pink, iron in blue and sulfur in yellow.
Chalcopyrite under polarized light by petrographic microscope
Copper-zinc ore sample from a VMS deposit at Potter Mine in Timmins, Ontario, Canada. The brassy-yellow mineral is chalcopyrite- the primary ore mineral at this mine.
Copper flash smelting process, a pyrometallurgical method of copper extraction from chalcopyrite.

This short article about science can be made longer. You can help Wikipedia by adding to it.