Fluorcaphite

Fluorcaphite is a mineral with the chemical formula (Ca,Sr,Ce,Na)5(PO4)3F. It is found in the Kola Peninsula in Russia. Its crystals are hexagonal (dipyramidal class) and are transparent with a vitreous luster. It is light to bright yellow, leaves a white streak and is rated five on the Mohs Scale. Fluorcaphite is radioactive.