Keywords: Cryolite RT ac.png en Polyhedral representation of the room temperature crystal structure of cryolite Na3AlF6 space group P21/n No 14 P21/c with different cell setting projected onto the a c plane Gray aluminium atoms green sodium atoms red fluorine atoms own Perditax 2010-09-01 cc-zero Crystal structures in space group number 14 Cryolite |