Which minerals contain fluorine in nature?

Fluorine is found in nature exclusively in the form of chemical compounds rather than as a free element. The principal fluorine-containing minerals include:1

• Fluorite (fluorspar, ${\text{CaF}}_2$): The most significant source of fluorine, widely used as a flux in metallurgical processes.123
• Cryolite (${\text{Na}}_3{\text{AlF}}_6$): A rare mineral historically sourced from Greenland, essential for aluminum refining.12
• Fluoroapatite (${\text{Ca}}_5[{\text{PO}}_4{]}_3[\text{F,Cl}]$): A widely distributed mineral that contains variable amounts of fluorine and chlorine.1
• Topaz (${\text{Al}}_2{\text{SiO}}_4[\text{F,OH}{]}_2$): A well-known gemstone that incorporates fluorine into its structure.1
• Lepidolite: A type of mica that contains fluorine.1

Additionally, fluorine is present in phosphate rock and is a natural component of animal bones and teeth.12