Examples from the Web for chalcopyrite
Later still experiments were made with other metallic-looking ores, such as chalcopyrite, and the metal age had come.The Bronze Age and the Celtic World|Harold Peake
Both chalcocite and chalcopyrite frequently occur in silver-bearing rocks.
Copper-glance readily alters to other minerals, such as malachite, covellite, melaconite and chalcopyrite.
The cobalt ores at these localities occur with pyrites and chalcopyrite as bands in gneiss.
If chalcopyrite (copper-iron sulphide) is present the spots may be bright green in colour.The Natural History of Clay|Alfred B. Searle