data_global _chemical_name_mineral 'Zorite' loop_ _publ_author_name 'Sandomirskii P A' 'Belov N V' _journal_name_full 'Soviet Physics Crystallography' _journal_volume 24 _journal_year 1979 _journal_page_first 686 _journal_page_last 693 _publ_section_title ; The OD structure of zorite ; _database_code_amcsd 0015580 _chemical_compound_source 'central natrolite region, Yubileinaya pegmatoid vein, Lovozero massif' _chemical_formula_sum 'Ti2.3 Nb.2 Si6 Na3 O24.75 H10.5' _cell_length_a 23.241 _cell_length_b 7.238 _cell_length_c 6.955 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1169.959 _exptl_crystal_density_diffrn 2.194 _symmetry_space_group_name_H-M 'C m m m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,z' '1/2+x,1/2-y,z' '-x,y,-z' '1/2-x,1/2+y,-z' '-x,y,z' '1/2-x,1/2+y,z' 'x,-y,-z' '1/2+x,1/2-y,-z' 'x,y,-z' '1/2+x,1/2+y,-z' '-x,-y,z' '1/2-x,1/2-y,z' '-x,-y,-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 Ti1 0.25000 0.25000 0.00000 0.90000 0.00899 Nb1 0.25000 0.25000 0.00000 0.10000 0.00899 Ti2 0.00000 0.50000 0.04570 0.25000 0.01938 Si1 0.16180 0.00000 0.26970 1.00000 0.00861 Si2 0.06390 0.09430 0.00000 0.50000 0.01039 Na1 0.25000 0.25000 0.50000 0.50000 0.02786 Na2 0.36540 0.00000 0.21820 0.50000 0.04939 O1 0.15450 0.00000 0.50000 1.00000 0.02153 O2 0.09520 0.00000 0.18780 1.00000 0.02026 O3 0.19400 0.18530 0.20360 1.00000 0.02153 O4 0.22080 0.50000 0.00000 1.00000 0.01393 O5 0.00000 0.00000 0.00000 1.00000 0.01267 O6 0.06020 0.31970 0.00000 0.50000 0.02913 O7 0.01120 0.50000 0.28260 0.12500 0.02786 Wat1 0.29490 0.05370 0.50000 0.50000 0.05066 Wat2 0.08110 0.38240 0.50000 0.25000 0.07726 Wat3 0.07200 0.50000 0.50000 0.12500 ? Wat4 0.10000 0.30000 0.50000 0.25000 ? Wat5 0.03000 0.09000 0.50000 0.25000 ?