Indiana University
Indiana Univ. Bloomington: Reference Documents: Pyrite "Fool's Gold" [Pdf]
A fact card describing the properties and characteristics of pyrite, where it is found, its effects on its immediate environment, its chemical structure, and where it fits on Mohs hardness scale.
Indiana University
Indiana University Bloomington: Geo Notes: Pyrite (Fool's Gold) [Pdf]
Explains how to tell pyrite from real gold, its use as a source of sulfur, and how the sulfur dioxide produced by burning coal containing pyrite is removed from the exhaust.