Chalcopyrite
Pronunciation : Chal`co*pyr"ite
Part of Speech : n.
Etymology : [Gr. pyrite. So named from its color.] (Min.)
Definition : Defn: Copper pyrites, or yellow copper ore; a common ore of opper, containing copper, iron, and sulphur. It occurs massive and in tetragonal crystals of a bright brass yellow color.
Source : Webster's Unabridged Dictionary, 1913