Chiolite is a tetragonal-ditetragonal dipyramidal mineral, composed of sodium, fluorine, and aluminium. The name originates from the combination of the greek words for snow (χιώυ) and stone (λίθος). It is an allusion to its' similarity and appearance to cryolite (ice stone). It was first discovered in the Ilmen mountains, Russia, in 1846, but otherwise can be found in Greenland and Virginia. It occurs in some granite pegmatites. It's been a valid species from the same year of its' discovery. It consists of 24.89% sodium, 17.53% aluminium, 57.59% fluorine.