Villiaumite
Deshpande V T
Acta Crystallographica 14 (1961) 794-794
Thermal expansion of sodium fluoride and sodium bromide
Note: T = 208 C, rocksalt structure
_database_code_amcsd 0009256
4.6648 4.6648 4.6648 90 90 90 Fm3m
atom  x  y  z
Na    0  0  0
F    .5 .5 .5