Natrolite
Baur W H, Joswig W
Neues Jahrbuch fur Mineralogie, Monatshefte 1996 (1996) 171-187
The phases of natrolite occurring during dehydration and rehydration studied
by single crystal X-ray diffraction methods between room temperature and 923 K
Locality: Khibiny, Kola peninsula, Russia
Sample: T = 573 K, crystal III, "high natrolite"
_database_code_amcsd 0014893
17.328 17.551 6.385 90 90 90 Fdd2
atom      x      y      z occ Uiso
Na1    .047   .310   .342 .25  .13
Na2    .010   .325   .692 .25 .083
Na3   -.065   .274   .596 .25  .14
Na4    .105   .127   .054 .25 .094
Al   -.0277 -.1038  .6128     .089
Si1       0      0 -.0102     .050
Si2  -.1470 -.2242  .6273     .072
O1    .0182  .0715   .830      .16
O2    .0572  .1994   .614     .077
O3   -.1510 -.3052   .727     .152
O4    .1885  .1572   .753      .18
O5    .1820  .2209   .390     .152