data_global _chemical_name_mineral 'Analcime' loop_ _publ_author_name 'Cruciani G' 'Gualtieri A' _journal_name_full 'American Mineralogist' _journal_volume 84 _journal_year 1999 _journal_page_first 112 _journal_page_last 119 _publ_section_title ; Dehydration dynamics of analcime by in situ synchrotron powder diffraction Sample at T = 298 K ; _database_code_amcsd 0002062 _chemical_formula_sum '(Si4.1 Al1.9) Na1.95 O14 H4' _cell_length_a 13.7295 _cell_length_b 13.7295 _cell_length_c 13.7036 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 2583.117 _exptl_crystal_density_diffrn 2.259 _symmetry_space_group_name_H-M 'I 41/a c d' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' '1/4-y,3/4-x,3/4+z' '3/4-y,1/4-x,1/4+z' '1/4+y,3/4+x,3/4-z' '3/4+y,1/4+x,1/4-z' '1/4+y,3/4-x,1/4-z' '3/4+y,1/4-x,3/4-z' '1/4-y,3/4+x,1/4+z' '3/4-y,1/4+x,3/4+z' '1/2+x,-y,z' '+x,1/2-y,1/2+z' '1/2-x,y,-z' '-x,1/2+y,1/2-z' '1/2+x,y,1/2-z' '+x,1/2+y,-z' '1/2-x,-y,1/2+z' '-x,1/2-y,+z' '1/4+y,1/4+x,1/4+z' '3/4+y,3/4+x,3/4+z' '1/4-y,1/4-x,1/4-z' '3/4-y,3/4-x,3/4-z' '1/4-y,1/4+x,3/4-z' '3/4-y,3/4+x,1/4-z' '1/4+y,1/4-x,3/4+z' '3/4+y,3/4-x,1/4+z' '-x,y,1/2+z' '1/2-x,1/2+y,+z' 'x,-y,1/2-z' '1/2+x,1/2-y,-z' '-x,-y,-z' '1/2-x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv Si1 0.12430 0.16090 0.41410 0.57500 0.03800 Al1 0.12430 0.16090 0.41410 0.42500 0.03800 Si2 0.16190 0.41190 0.12500 0.90000 0.03900 Al2 0.16190 0.41190 0.12500 0.10000 0.03900 Na1 0.13430 0.00000 0.25000 0.86000 0.08300 Na2 0.00000 0.25000 0.12500 0.23000 0.08300 O1 0.09900 0.37340 0.21880 1.00000 0.02400 O2 0.22190 0.11200 0.36270 1.00000 0.05500 O3 0.35820 0.21790 0.10520 1.00000 0.03800 Wat 0.11650 0.13350 0.12500 1.00000 0.06900