data_global _chemical_name_mineral 'Metanatrolite' loop_ _publ_author_name 'Baur W H' 'Joswig W' _journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte' _journal_volume 1996 _journal_year 1996 _journal_page_first 171 _journal_page_last 187 _publ_section_title ; The phases of natrolite occurring during dehydration and rehydration studied by single crystal X-ray diffraction methods between room temperature and 923 K Sample: T = 723 K, crystal II, "metanatrolite" ; _database_code_amcsd 0014889 _chemical_compound_source 'Khibiny, Kola peninsula, Russia' _chemical_formula_sum 'Na1.82 Al2 Si3 O10' _cell_length_a 16.575 _cell_length_b 17.427 _cell_length_c 6.4610 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90.0 _cell_volume 1866.276 _exptl_crystal_density_diffrn 2.421 _symmetry_space_group_name_H-M 'F 1 1 2' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2+y,1/2+z' '1/2+x,y,1/2+z' '1/2+x,1/2+y,z' '-x,-y,z' '-x,1/2-y,1/2+z' '1/2-x,-y,1/2+z' '1/2-x,1/2-y,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 0.05650 0.18330 0.13840 1.00000 0.15300 Na2 0.30250 0.06020 0.33400 0.41000 0.12800 Na21 0.26280 0.07310 0.42300 0.41000 0.06900 Al11 0.03000 0.10180 0.60820 1.00000 0.04090 Al12 0.27310 0.14510 0.85980 1.00000 0.03710 Si11 0.00000 0.00000 -0.01270 1.00000 0.03780 Si12 0.25000 0.25000 0.24300 1.00000 0.04340 Si21 0.13940 0.23020 0.61850 1.00000 0.03640 Si22 0.10880 -0.02400 0.35880 1.00000 0.03980 O11 0.03980 0.06850 0.85130 1.00000 0.05700 O12 0.24470 0.17210 0.11040 1.00000 0.05600 O21 0.04540 0.20320 0.60330 1.00000 0.05500 O22 0.20160 -0.04870 0.34430 1.00000 0.03900 O31 0.09810 0.06520 0.42780 1.00000 0.05200 O32 0.14800 0.30020 0.76490 1.00000 0.08200 O41 0.06810 -0.07950 0.52960 1.00000 0.05300 O42 0.19420 0.16120 0.68520 1.00000 0.06200 O51 0.06990 -0.03930 0.13020 1.00000 0.06300 O52 0.16960 0.25820 0.39010 1.00000 0.05600