Fluorite

Fluorite is the mineral form of calcium fluoride. It has a chemical formula of .

Fluorite is the main source of fluorine and fluorides.  It naturally fluoridates drinking water in places where it is found.  It has a hardness of 5. It barely dissolves in water.  Geologists have found about 9000 deposits of fluorite found on the Earth.  It is mainly mined in China, Mexico and Russia. 

Category:Halide minerals
Category:Calcium compounds
Category:Fluorine compounds