data_global _chemical_name_mineral 'Kogarkoite' loop_ _publ_author_name 'Pabst A' 'Sharp W N' _journal_name_full 'American Mineralogist' _journal_volume 58 _journal_year 1973 _journal_page_first 116 _journal_page_last 127 _publ_section_title ; Kogarkoite, a new natural phase in the system Na2SO4 - NaF - NaCl ; _database_code_amcsd 0000305 _chemical_formula_sum 'Na3 S O4 F' _cell_length_a 4.846 _cell_length_b 4.846 _cell_length_c 4.846 _cell_angle_alpha 91.80 _cell_angle_beta 91.80 _cell_angle_gamma 91.80 _cell_volume 113.630 _exptl_crystal_density_diffrn 2.689 _symmetry_space_group_name_H-M 'R 3 m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,z,y' 'z,x,y' 'y,x,z' 'y,z,x' 'z,y,x' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Na 0.50000 0.50000 0.00000 S 0.49600 0.49600 0.49600 O1 0.31500 0.31500 0.31500 O2 0.67100 0.67100 0.32500 F 0.00000 0.00000 0.00000