chalcopyrite Meaning, Definition & Usage

  1. noun a yellow copper ore (CuFeS2) made up of copper and iron sulfide
    copper pyrites.

WordNet

Chal`co*pyr"ite noun
Etymology
Gr. brass + E. pyrite. So named from its color.
Definitions
  1. (Min.) 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.

Webster 1913