Rb(Br.4I.6) Ahtee M Annales Academiae Scientiarum Fennicae Series A6: Physica 313 (1969) 1-11 Lattice constants of some binary alkali halide solid solutions. _database_code_amcsd 0012000 7.1560 7.1560 7.1560 90 90 90 Fm3m atom x y z occ Rb 0 0 0 Br .5 .5 .5 .4 I .5 .5 .5 .6