data_global _chemical_name_mineral 'Shomiokite-(Y)' loop_ _publ_author_name 'Rastsvetaeva R K' 'Pushcharovsky D Y' 'Pekov I V' _journal_name_full 'European Journal of Mineralogy' _journal_volume 8 _journal_year 1996 _journal_page_first 1249 _journal_page_last 1255 _publ_section_title ; Crystal structure of shomiokite-(Y), Na3Y(CO3)3*3H2O ; _database_code_amcsd 0006632 _chemical_formula_sum 'Na3 Y C3 O12 H6' _cell_length_a 17.358 _cell_length_b 10.034 _cell_length_c 5.946 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1035.616 _exptl_crystal_density_diffrn 2.514 _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_U_iso_or_equiv Na1 0.45270 0.37400 0.91460 0.02540 Na2 0.36230 0.13930 0.40700 0.02920 Na3 0.08120 0.48400 0.41350 0.02540 Y 0.16180 0.17810 0.69930 0.01310 C1 0.39990 0.44770 0.41100 0.01780 C2 0.30580 0.19220 0.91200 0.02030 C3 0.07860 0.38110 0.91900 0.01780 O1 0.24650 0.26860 0.96800 0.02280 O2 0.04590 0.47060 0.03400 0.02160 O3 0.06900 0.25210 0.95700 0.02160 O4 0.12540 0.40760 0.75800 0.02410 O5 0.16720 0.00420 0.96300 0.02160 O6 0.29690 0.11600 0.74400 0.02790 O7 0.36860 0.19920 0.02500 0.02660 O8 0.42240 0.34560 0.52200 0.02280 O9 0.43760 0.49880 0.24900 0.02280 Ow1 0.06530 0.22000 0.41100 0.02660 Ow2 0.22530 0.30800 0.40900 0.03680 Ow3 0.19270 0.01690 0.40600 0.03550 H1 0.02000 0.17000 0.46000 0.03800 H2 0.06000 0.22000 0.26000 0.03800 H3 0.22000 0.31000 0.25000 0.03800 H4 0.29000 0.35000 0.37000 0.03800 H5 0.18000 0.04000 0.21000 0.03800 H6 0.24000 -0.02000 0.42000 0.03800