Definitions for "Pyrrhotite"
Keywords:  sulphide, sulfide, pyrite, bronze, iron
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.
A yellow-tan iron sulfide mineral, approximately FeS.
Yellow-brown, reddish, occasionally somewhat magnetic mineral composed of iron and sulfur. It sometimes contains nickel and is mined for its nickel content.