data_global _chemical_name_mineral 'Fabriesite' loop_ _publ_author_name 'Hansen S' 'Faelth L' _journal_name_full 'Zeolites' _journal_volume 2 _journal_year 1982 _journal_page_first 162 _journal_page_last 166 _publ_section_title ; X-ray study of the nepheline hydrate I structure ; _database_code_amcsd 0019785 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Na3 Al3 Si3 O13.8' _cell_length_a 16.426 _cell_length_b 15.014 _cell_length_c 5.2235 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1288.219 _exptl_crystal_density_diffrn 2.346 _symmetry_space_group_name_H-M 'P n a 21' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,z' '1/2-x,1/2+y,1/2+z' '-x,-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 Na1 0.09290 0.25000 0.77400 1.00000 ? Na2 0.41560 0.25180 0.27300 1.00000 ? Na3 0.20860 0.50440 0.13500 0.80000 0.04813 Na4 0.21600 0.00500 0.12000 0.20000 0.06839 Al1 0.20220 0.25090 0.25000 1.00000 0.00798 Al2 0.45110 0.39230 0.73400 1.00000 0.01317 Al3 0.45110 0.10680 0.73800 1.00000 0.00621 Si1 0.30750 0.24820 0.74700 1.00000 0.00988 Si2 0.05740 0.10900 0.23200 1.00000 0.00659 Si3 0.05590 0.38900 0.23600 1.00000 0.01355 O1 0.22520 0.24950 0.58300 1.00000 0.01267 O2 0.28780 0.24980 0.05500 1.00000 0.01393 O3 0.14110 0.16060 0.17300 1.00000 0.02153 O4 0.14360 0.34470 0.18000 1.00000 0.01393 O5 0.36180 0.33390 0.67400 1.00000 0.02026 O6 0.35920 0.16060 0.67400 1.00000 0.01900 O7 0.02280 0.13920 0.50900 1.00000 0.02153 O8 0.02300 0.35630 0.51900 1.00000 0.00760 O9 0.48860 0.35830 0.03100 1.00000 0.00887 O10 0.49320 0.14470 0.02800 1.00000 0.01900 O11 0.07360 0.00480 0.22100 1.00000 0.01900 O12 0.06890 0.49540 0.22500 1.00000 0.01393 O13 0.33700 0.49200 0.22600 0.80000 0.09879 O14 0.23700 0.49700 0.68600 0.80000 0.12665 O15 0.16800 0.50300 0.76000 0.20000 0.10132 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Na1 0.01640 0.02398 0.01382 0.01874 -0.00130 0.00119 Na2 0.01640 0.02284 0.01382 0.01624 0.00304 -0.00119