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 = 293 K, crystal III, "postnatrolite" _database_code_amcsd 0014894 18.221 18.331 6.536 90 90 90 Fdd2 atom x y z occ Uiso Na .2238 .0260 .611 .87 .083 Al .0363 .0952 .6151 .055 Si1 0 0 -.0024 .0289 Si2 .1555 .2134 .6297 .053 O1 .0243 .0688 .861 .062 O2 .0713 .1837 .603 .036 O3 .0978 .0368 .487 .086 O4 .2054 .1513 .729 .062 O5 .1825 .2269 .402 .051 Wat .0621 .1891 .119 .75 .061