Calcium fluoride occurs naturally in nature as fluorspar or the mineral fluorite. The compound is the primary source of fluorine and its associated compounds. Calcium fluoride is used in fluoridating drinking water and as a catalyst in dehydration. The molecular weight of calcium fluoride is 78.07 g/mol. It has a hydrogen bond donor count of zero, a hydrogen bond acceptor count of two, and a rotatable bond count of zero. Calcium fluoride has an exact and monoisotopic mass of 77.959397 g/mol. The heavy atom count of calcium fluoride is three. It also has a complexity of zero and is a canonicalized compound. Calcium fluoride has a boiling point of 4,532°F (2,500°C). It also has a melting point of 2,557.4°F (1,403°C). Calcium fluoride is essentially insoluble in water and acetone and is slightly soluble in acid. Calcium fluoride is used in manufacturing optical components like lenses and windows. It is also used in telescopes, spectroscopy, thermal imaging systems, and excimer lasers.