Pyrites

n.

1.

(Min.) A name given to a number of metallic minerals, sulphides of iron, copper, cobalt, nickel, and tin, of a white or yellowish color. Arsenical pyrites arsenopyrite. Auriferous pyrites See under Auriferous. Capillary pyrites millerite. Common pyrites isometric iron disulphide; pyrite. Hair pyrites millerite. Iron pyrites See Pyrite. Magnetic pyrites pyrrhotite. Tin pyrites stannite. White iron pyrites orthorhombic iron disulphide; marcasite. This includes cockscomb pyrites (a variety of marcasite, named in allusion to its form), spear pyrites, etc. Yellow pyrites the sulphide of copper and iron; chalcopyrite.

Noun

1.

pyrites - any of various metallic-looking sulfides (of which pyrite is the commonest)

sulfide, sulphide