Natrolite Seryotkin Y V, Bakakin V V, Fursenko B A, Belitsky I A, Joswig W, Radaelli P G European Journal of Mineralogy 17 (2005) 305-313 Structural evolution of natrolite during over-hydration: a high-pressure neutron diffraction study Note: Zeolite Sample: Khibiny massif, Kola Peninsula, Russia; P = .9 GPa _database_code_amcsd 0007098 18.2126 18.5695 6.5741 90 90 90 Fdd2 atom x y z occ Uiso Na -.0254 .2162 .389 .96 .019 Mg -.0254 .2162 .389 .03 .019 Ca -.0254 .2162 .389 .01 .019 Al .0344 .0940 .609 .008 Si1 0 0 0 .007 Si2 -.0985 .0370 .365 .003 O1 .0229 .0687 .866 .007 O2 .0695 .1823 .612 .003 O3 .0984 .0353 .497 .018 O4 -.0476 .0971 .468 .010 O5 -.0687 .0238 .137 .037 Ow6 .0557 .1916 .111 .74 .015 D61 .0520 .1472 .058 .74 .015 D62 .1065 .1901 .178 .74 .015 Ow7' .118 .354 .399 .18 .013