Calcium fluoride is a chemical compound with the formula CaF2. It consists of one calcium atom and two fluoride atoms. This compound is commonly found in nature as the mineral fluorite, which is known for its colorful crystals and is often used in various industrial applications. In addition to its natural occurrence, calcium fluoride is used in the production of aluminum, glass, and ceramics. It also plays a role in dental care, as it can help prevent tooth decay when used in certain fluoride treatments.