Bastnäsite is a group of rare-earth fluorocarbonate minerals, most commonly dominated by cerium, lanthanum, or neodymium. Bastnäsite-(Ce), with the ideal formula CeCO3F, is particularly important as an ore mineral of light rare earth elements and occurs prominently in some carbonatite and alkaline-related deposits. Its REE content makes bastnäsite-bearing ores important potential sources of elements used in magnets, electronics, energy technologies, and other advanced materials.