cry·o·lith·i·o·nite | \ˌkrīōˈlithēəˌnīt, -lə̇ˈthīə-\
plural -s

Definition of cryolithionite 

: a mineral composed of a fluoaluminate of sodium and lithium Na3Li3(AlF6)2 found in the Ural mountains

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History and Etymology for cryolithionite

alteration of earlier kryolithionite, from kryo- cryo- + lithionite (obsolete synonym of lepidolite), from German lithonit, from obsolete New Latin lithion (now lithia) + German -it -ite

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