a mineral consisting chiefly of iron carbonate
Also called chalybite. a common mineral, iron carbonate, FeCO 3, usually occurring in yellowish to deep-brown cleavable masses: a minor ore of iron.
1. (Minerals) Also called: chalybite a pale yellow to brownish-black mineral consisting chiefly of iron carbonate in hexagonal crystalline form. It occurs mainly in ore veins and sedimentary rocks and is an important source of iron. Formula: FeCO3