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: synthetic
_database_code_amcsd 0014034
5.4054 5.5934 7.7672 90 89.81 90 P2_1/n
atom     x     y     z Biso
Na2  .5138 .5520 .2518  2.3
Na1     .5     0    .5  1.6
Al1     .5     0     0  1.8
F1   .2255 .1765 .9530  1.6
F2   .3353 .7285 .9362  1.4
F3   .3970 .9564 .2182  1.4