Fluorspar is the commercial name for the naturally occurring mineral fluorite, composed of calcium and fluorine (CaF2). Fluorspar is the predominant commercial source for the chemical element fluorine. Fluorine is a non-metallic element and the lightest of the halogens and therefore largely irreplaceable in its use. There are two principal commercial grades of fluorspar: Metallurgical grade (60-96% CaF2) and acid grade (+97% CaF2).
