Simmonsite 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: synthetic _database_code_amcsd 0014032 5.2842 5.3698 7.5063 90 89.98 90 P2_1/n atom x y z Biso Na .5010 .5389 .2506 2.1 Li .5 0 .5 1.0 Al .5 0 0 1.4 F1 .2200 .1930 .9620 1.4 F2 .3072 .7215 .9585 1.5 F3 .4239 .9796 .2310 1.4