Analcime Ferraris G, Jones D W, Yerkess J Zeitschrift fur Kristallographie 135 (1972) 240-252 A neutron-diffraction study of the crystal structure of analcime, NaAlSi2O6*H2O Locality: Cyclopean Islands, Catania Province, Sicily, Italy Note: z(O1) corrected to match reported bond lengths _database_code_amcsd 0010728 13.73 13.73 13.73 90 90 90 Ia-3d atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Na .125 0 .25 2/3 .0044 .0039 .0039 0 0 -.0017 Al .66208 -.41208 .125 1/3 .00163 .00163 .00194 -.00013 .00014 .00014 Si .66208 -.41208 .125 2/3 .00163 .00163 .00194 -.00013 .00014 .00014 O .10428 .13440 .71932 .00401 .00482 .00219 .00058 .00062 .00031 Ow .125 .125 .125 .0088 .0088 .0088 .0027 .0027 .0027 H1 .0791 .0791 .0791 .25 .0133 .0133 .0133 -.0020 -.0020 -.0020 H2 .1402 .1006 .0548 .25 .0084 .0153 .0079 .0006 .0043 .0006