Definitions for "Pyrite"
A common mineral of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system; iron pyrites; iron disulphide.
a brassy yellow, cubic shaped mineral also known as 'Fool's Gold'.
Pyrite - A common, pale-bronze or brass-yellow mineral: FeS2: similar to marcasite and often has small amounts of other metals; shines brightly and has been mistaken for gold, which is softer and heavier; also called "fool's gold."