data_global _chemical_name_mineral 'Pyromorphite' loop_ _publ_author_name 'Miyake M' 'Ishigaki K' 'Suzuki T' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 61 _journal_year 1986 _journal_page_first 230 _journal_page_last 235 _publ_section_title ; Structure refinements of Pb2+ ion-exchanged apatites by X-ray powder pattern-fitting Note: Sample OHAp Note: apatite group ; _database_code_amcsd 0013571 _chemical_compound_source 'Synthetic' _chemical_formula_sum '(Pb3.69 Ca1.31) P3 O13 H' _cell_length_a 9.880 _cell_length_b 9.880 _cell_length_c 7.417 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 627.008 _exptl_crystal_density_diffrn 5.927 _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 _atom_site_occupancy _atom_site_U_iso_or_equiv Pb1 0.33333 0.66667 0.00600 0.69000 0.03420 Ca1 0.33333 0.66667 0.00600 0.31000 0.03420 Pb2 0.25200 0.99900 0.25000 0.77000 0.02660 Ca2 0.25200 0.99900 0.25000 0.23000 0.02660 P 0.39300 0.37300 0.25000 1.00000 0.01140 O1 0.32300 0.48200 0.25000 1.00000 0.03800 O2 0.57900 0.48000 0.25000 1.00000 0.01393 O3 0.34900 0.26700 0.07500 1.00000 0.03420 O-H 0.00000 0.00000 0.18800 0.50000 0.02153