From The Collaborative International Dictionary of English v.0.48 :
Pyrrhotine \Pyr"rho*tine\, Pyrrhotite \Pyr"rho*tite\, n. [Gr. ?
flame-colored, fr. ? fire.] (Min.)
A bronze-colored mineral, of metallic luster. It is a
sulphide of iron, and is remarkable for being attracted by
the magnet. Called also magnetic pyrites.
[1913 Webster] pyrrol
From WordNet (r) 3.0 (2006) :
pyrrhotite
n 1: a brownish iron sulfide mineral (FeS) having weak magnetic
properties [syn: pyrrhotite, pyrrhotine, magnetic
pyrites]