we are looking for calcium fluoride buyer. 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).