data_global _chemical_name_mineral 'Daqingshanite-(Ce)' loop_ _publ_author_name 'Hughes J M' 'Yunxiang N' _journal_name_full 'Mineralogical Magazine' _journal_volume 58 _journal_year 1994 _journal_page_first 493 _journal_page_last 496 _publ_section_title ; A high-precision crystal structure refinement of daqingshanite-(Ce) from Nkombwa Hill carbonatite, Zambia ; _database_code_amcsd 0014507 _chemical_compound_source 'Nkombwa Hill carbonatite, Zambia' _chemical_formula_sum 'Sr3 Ce P C3 O13' _cell_length_a 10.073 _cell_length_b 10.073 _cell_length_c 9.234 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 811.406 _exptl_crystal_density_diffrn 4.162 _symmetry_space_group_name_H-M 'R 3 m' loop_ _space_group_symop_operation_xyz 'x,y,z' '2/3+x,1/3+y,1/3+z' '1/3+x,2/3+y,2/3+z' 'x,x-y,z' '2/3+x,1/3+x-y,1/3+z' '1/3+x,2/3+x-y,2/3+z' '-y,-x,z' '2/3-y,1/3-x,1/3+z' '1/3-y,2/3-x,2/3+z' '-x+y,y,z' '2/3-x+y,1/3+y,1/3+z' '1/3-x+y,2/3+y,2/3+z' '-y,x-y,z' '2/3-y,1/3+x-y,1/3+z' '1/3-y,2/3+x-y,2/3+z' '-x+y,-x,z' '2/3-x+y,1/3-x,1/3+z' '1/3-x+y,2/3-x,2/3+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Sr 0.48294 -0.48294 0.04310 0.01136 Ce 0.00000 0.00000 0.00000 0.01070 P 0.33333 0.66667 0.24480 0.01646 C 0.33070 0.16535 0.23250 0.01520 O1 0.33333 0.66667 0.40700 0.06079 O2 0.25030 0.50060 0.18970 0.02280 O3 0.19000 0.09500 0.20710 0.01773 O4 0.40460 0.09380 0.25210 0.02191