Cryolite (Na3AlF6, sodium hexafluoroaluminate) is an uncommon mineral identified with the once-large deposit at Ivittuut on the west coast of Greenland, depleted by 1987. Due to its rarity it is possibly the only mineral on Earth ever to be mined to commercial extinction. It is used as a solvent for bauxite in the electrolytic production of aluminum and has various other metallurgical applications, and it is used in the glass and enamel industries, in bonded abrasives as a filler, and in the manufacture of insecticides. A large amount of synthetic cryolite is made from fluorite. For detailed physical properties, see halide mineral (table).
Cryolite Basic Information
CAS: 15096-52-3 MF: AlF6Na3 MW: 209.94 EINECS: 239-148-8 Mol File: 15096-52-3.mol 
Cryolite Chemical Properties Melting point 1012 Boiling point decomp density 2.9 g/mL at 25 °C(lit.) Cryolite Application
Mainly used as aluminum smelting flux, insecticide, also used in glass, enamel, resin, rubber industry
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