Noun
A fluoride of sodium and aluminum, found in Greenland, in white cleavable masses; -- used as a source of soda and alumina.
Source: Webster's dictionaryThe plant offered two advantages: (i) energy requirements were 40% less than plants using the Hall–Héroult process, and (ii) the more accessible kaolinite (instead of bauxite and cryolite ) was used for feedstock. Source: Internet
When cryolite is used for the preparation of alum, it is mixed with calcium carbonate and heated. Source: Internet