A

David

Darling

fluorite

fluorite

Specimen of fluorite.


Fluorite, also known as fluorspar, is a common mineral composed of calcium fluoride, CaF2 (see calcium). It forms cubic crystals with a wide color range. Fluorite is used as a flux in the iron and steel industries, and as a fluorine ore. Under an ultraviolet light, fluorite shows the property of fluorescence.