data_global _chemical_name_mineral 'Cejkaite' loop_ _publ_author_name 'Li Y' 'Krivovichev S V' 'Burns P C' _journal_name_full 'Mineralogical Magazine' _journal_volume 65 _journal_year 2001 _journal_page_first 297 _journal_page_last 304 _publ_section_title ; The crystal structure of Na4(UO2)(CO3)3 and its relationship to schrockingerite ; _database_code_amcsd 0014557 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Na4 U C3 O11' _cell_length_a 9.3417 _cell_length_b 9.3417 _cell_length_c 12.824 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 969.183 _exptl_crystal_density_diffrn 3.715 _symmetry_space_group_name_H-M 'P -3 c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-y,-x,1/2+z' 'y,-x+y,-z' '-x,-x+y,1/2-z' '-x+y,-x,z' '-x+y,y,1/2+z' '-x,-y,-z' 'y,x,1/2-z' '-y,x-y,z' 'x,x-y,1/2+z' 'x-y,x,-z' 'x-y,-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 0.00000 0.00000 0.25000 0.02300 Na2 0.00000 0.00000 0.00000 0.02200 Na3 0.87690 0.30760 0.37640 0.02700 U 0.66667 0.33333 0.13030 0.01100 C 0.07330 0.74440 0.37230 0.01700 O1 0.66667 0.33333 0.27180 0.02000 O2 0.66667 0.33333 -0.01060 0.02300 O3 0.96510 0.78330 0.37840 0.02100 O4 0.04600 0.59590 0.38170 0.02300 O5 0.14710 0.37650 0.35630 0.02600 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Na1 0.02200 0.02200 0.02400 0.01100 0.00000 0.00000 Na2 0.02300 0.02300 0.02000 0.01100 0.00000 0.00000 Na3 0.01300 0.01600 0.04900 0.00600 0.00100 0.00500 U 0.01000 0.01000 0.01300 0.00500 0.00000 0.00000 C 0.01100 0.01300 0.02200 0.00200 -0.00400 -0.00100 O1 0.02200 0.02200 0.01700 0.01100 0.00000 0.00000 O2 0.03000 0.03000 0.00900 0.01500 0.00000 0.00000 O3 0.01500 0.01900 0.03300 0.01200 -0.00200 -0.00300 O4 0.01000 0.01000 0.04900 0.00500 0.00600 0.00600 O5 0.01200 0.01500 0.05500 0.01000 0.00000 -0.00200