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n. An uncommon, white, vitreous natural fluoride of aluminum and sodium, Na3AlF6, nearly invisible in water in powdered form and used chiefly in the electrolytic recovery of aluminum. Also called Greenland spar.

n. The mineral sodium aluminium fluoride (Na3AlF6).

n. A fluoride of sodium and aluminum, found in Greenland, in white cleavable masses; -- used as a source of soda and alumina.

n. A fluorid of sodium and aluminium found in Greenland, where it forms an extensive bed.

n. a white mineral consisting of fluorides of aluminum and sodium; a source of fluorine

"At the smelter, the aluminum oxide crystals are dissolved in a bath of something called cryolite (sodium aluminum fluoride) and zapped with enormous jolts of electricity (100,000 to 150,000 amps), which strips the oxygen from the aluminum."

mineral   

cryolite glass   

draconis    andaluminum    vanadium    bauxite    indium    refrangibility    fluorspar    ocher    iridium    peridot