data_global _chemical_name_mineral 'Fluorapatite' loop_ _publ_author_name 'Bale W' _journal_name_full 'American Journal of Roentgenology' _journal_volume 43 _journal_year 1940 _journal_page_first 735 _journal_page_last 747 _publ_section_title ; A comparative Roentgen-ray diffraction study of several natural apatites and the apatite-like constituent of bone and tooth substance _cod_database_code 1010647 ; _database_code_amcsd 0017528 _chemical_formula_sum 'F Ca5 P3 O12' _cell_length_a 9.37 _cell_length_b 9.37 _cell_length_c 6.88 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 523.116 _exptl_crystal_density_diffrn 3.202 _symmetry_space_group_name_H-M 'P 63/m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x+y,-x,1/2-z' 'x-y,x,1/2+z' 'y,-x+y,-z' '-y,x-y,z' 'x,y,1/2-z' '-x,-y,1/2+z' 'x-y,x,-z' '-x+y,-x,z' '-y,x-y,1/2-z' 'y,-x+y,1/2+z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z F1 0.00000 0.00000 0.25000 Ca1 0.33333 0.66667 0.00000 Ca2 0.23700 -0.01500 0.25000 P1 0.41600 0.36100 0.25000 O1 0.33333 0.50000 0.25000 O2 0.60000 0.46700 0.25000 O3 0.33333 0.25000 0.06200