Dictionary
py•rite
Pronunciation: (pī'rīt), [key]—
n.
a very common brass-yellow mineral, iron disulfide, FeS
2, with a metallic luster, burned to sulfur dioxide in the manufacture of sulfuric acid: chemically similar to marcasite, but crystallizing in the isometric system.
Also,pyrites.Also called
iron pyrites. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.