Neighborite Mitchell R H, Alexander M, Cranswick L M D, Swainson I P Physics and Chemistry of Minerals 34 (2007) 705-712 A powder neutron diffraction study of the crystal structure of the fluoroperovskite NaMgF3 (neighborite) from 300 to 3.6 K Locality: synthetic Sample: T = 25 K _database_code_amcsd 0009124 5.3292 5.4813 7.6336 90 90 90 Pbnm atom x y z Na .9857 .0483 .25 Mg 0 .5 0 F1 .0935 .4698 .25 F2 .7002 .2955 .0485