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 = 225 K _database_code_amcsd 0009116 5.3494 5.4846 7.6557 90 90 90 Pbnm atom x y z Na .9885 .0448 .25 Mg 0 .5 0 F1 .0899 .4721 .25 F2 .7023 .2960 .0472