data_global _chemical_name_mineral 'Nosean' loop_ _publ_author_name 'Gesing T M' 'Buhl J-C' _journal_name_full 'European Journal of Mineralogy' _journal_volume 10 _journal_year 1998 _journal_page_first 71 _journal_page_last 77 _publ_section_title ; Crystal structure of a carbonate-nosean Na8[AlSiO4]6CO3 ; _database_code_amcsd 0006707 _chemical_formula_sum 'Na8 Al6 Si6 C O27' _cell_length_a 9.001 _cell_length_b 9.001 _cell_length_c 9.001 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 729.243 _exptl_crystal_density_diffrn 2.182 _symmetry_space_group_name_H-M 'P 2 3' loop_ _space_group_symop_operation_xyz 'x,y,z' '-z,-x,y' '-z,x,-y' 'z,-x,-y' 'z,x,y' 'y,-z,-x' '-y,-z,x' '-y,z,-x' 'y,z,x' '-x,y,-z' 'x,-y,-z' '-x,-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 0.18500 0.18500 0.18500 1.00000 0.01520 Na2 0.72900 0.72900 0.72900 1.00000 0.08612 Al 0.24100 0.50000 0.00000 1.00000 0.00380 Si 0.25900 0.00000 0.50000 1.00000 0.00633 C 0.00000 0.00000 0.00000 1.00000 0.01646 O1 0.13500 0.45000 0.15400 1.00000 0.01520 O2 0.64800 0.94900 0.64400 1.00000 0.01520 O3 0.91300 0.09900 0.06500 0.16667 0.01646 O4 0.13300 0.00000 0.00000 0.16667 0.01646