Na 3 AlF 6 . It is colourless or white and occurs in pegmatite veins. It is only mined in significant quantities in Greenland, although it is known to occur elsewhere. It is used in aluminium refining.
Synthetic cryolite is manufactured from hydrofluoric acid, sodium carbonate, and aluminium.
The Macmillan Encyclopedia 2001 2. cryolite Oxford Paperback Encyclopedia 3. Oxford University Press 4. cryolite A Dictionary of Earth Sciences 5. All rights reserved.