Cryolite Ross K C, Mitchell R H, Chakhmouradian A R Journal of Solid State Chemistry 172 (2003) 95-101 The crystal structure of synthetic simmonsite, Na2LiAlF6 Locality: natural _database_code_amcsd 0014033 5.4058 5.5926 7.7699 90 90.195 90 P2_1/n atom x y z Biso Na2 .5119 .9489 .2488 2.4 Na1 0 0 .5 1.4 Al 0 0 0 .9 F1 .1036 .0442 .2196 1.3 F2 .7257 .1741 .0425 1.9 F3 .1693 .2683 -.0609 1.8