Natrolite Krogh Andersen E, Krogh Andersen I G, Ploug-Sorensen G European Journal of Mineralogy 2 (1990) 799-807 Disorder in natrolites: structure determinations of three disordered natrolites and one lithium-exchanged disordered natrolite Example: Na II _database_code_amcsd 0006400 18.372 18.576 6.606 90 90 90 Fdd2 atom x y z Biso Na .22082 .03023 .62057 1.61 Al .03784 .09406 .61794 .58 Si1 0 0 0 .76 Si2 .15413 .21140 .62501 .70 O1 .02294 .06952 .86364 1.52 O2 .07033 .18089 .61630 .99 O3 .09784 .03615 .50614 1.29 O4 .20862 .15276 .73052 1.32 O5 .17997 .22715 .39040 1.53 O6 .05698 .19042 .11682 2.06 H1 .05870 .14860 .05500 2.0 H2 .10220 .19460 .18000 2.0