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 = 275 K _database_code_amcsd 0009114 5.3580 5.4874 7.6642 90 90 90 Pbnm atom x y z Na .9912 .0448 .25 Mg 0 .5 0 F1 .0871 .4727 .25 F2 .7033 .2958 .0473