data_global _chemical_name_mineral 'Nordite-(La)' loop_ _publ_author_name 'Bakakin V V' 'Belov N V' 'Borisov S V' 'Solovyeva L P' _journal_name_full 'American Mineralogist' _journal_volume 55 _journal_year 1970 _journal_page_first 1167 _journal_page_last 1181 _publ_section_title ; The crystal structure of nordite and its relationship to melilite and datolite-gadolinite ; _database_code_amcsd 0000207 _chemical_formula_sum 'Na3 Sr La Zn Si6 O17' _cell_length_a 14.27 _cell_length_b 5.16 _cell_length_c 19.45 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1432.166 _exptl_crystal_density_diffrn 3.717 _symmetry_space_group_name_H-M 'P c c a' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,-y,1/2+z' '-x,y,1/2-z' '1/2-x,y,1/2+z' '1/2+x,-y,1/2-z' '1/2+x,y,-z' '1/2-x,-y,z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Na1 0.00000 0.00000 0.00000 0.02596 Na2 0.06960 0.01250 0.16930 0.02660 Sr 0.25000 0.00000 0.02170 0.00076 La 0.25000 0.00000 0.31940 0.00494 Zn 0.25000 0.50000 0.16870 0.01153 Si1 0.09800 0.45420 0.06230 0.00773 Si2 0.10190 0.54330 0.27470 0.00583 Si3 0.11160 0.55160 -0.08190 0.00393 O1 0.99550 0.33890 0.08110 0.01064 O2 0.17010 0.29950 0.11010 0.00887 O3 0.11720 0.35370 -0.01310 0.01887 O4 0.10190 0.76400 0.06720 0.02077 O5 0.00000 0.63660 0.25000 0.01621 O6 0.17830 0.70900 0.23210 0.01051 O7 0.12210 0.65030 0.35320 0.01267 O8 0.11780 0.23920 0.27140 0.01596 O9 0.18570 0.22260 0.41730 0.01406