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 III _database_code_amcsd 0006401 18.367 18.583 6.599 90 90 90 Fdd2 atom x y z Biso Na .22082 .03022 .62050 1.52 Al .03778 .09408 .61794 .54 Si1 0 0 0 .72 Si2 .15402 .21145 .62497 .64 O1 .02289 .06952 .86443 1.43 O2 .07029 .18096 .61588 .91 O3 .09798 .03609 .50568 1.23 O4 .20849 .15283 .73077 1.28 O5 .17991 .22730 .39080 1.42 O6 .05675 .19050 .11679 2.02 H1 .05567 .15061 .06727 2.0 H2 .09284 .19371 .16636 2.0