data_global _amcsd_formula_title 'Fe3(H2O)[PO4]2' loop_ _publ_author_name 'Moore P B' 'Araki T' _journal_name_full 'American Mineralogist' _journal_volume 60 _journal_year 1975 _journal_page_first 454 _journal_page_last 459 _publ_section_title ; The Fe3(H2O)n[PO4]2 homologous series. II. The crystal structure of Fe3(H2O)[PO4]2 ; _database_code_amcsd 0000462 _chemical_formula_sum 'Fe3 P2 O9 H2' _cell_length_a 9.431 _cell_length_b 10.066 _cell_length_c 8.040 _cell_angle_alpha 90 _cell_angle_beta 117.6 _cell_angle_gamma 90 _cell_volume 676.401 _exptl_crystal_density_diffrn 3.687 _symmetry_space_group_name_H-M 'P 1 21/a 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,z' '1/2-x,1/2+y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Fe1 0.03150 0.13590 0.41300 0.01039 Fe2 0.43860 0.87710 0.07490 0.00874 Fe3 0.28130 0.12410 0.26280 0.00773 P1 0.67400 0.08730 0.37860 0.00621 P2 0.13430 0.83200 0.02620 0.00697 O1 0.80350 0.18760 0.39500 0.00912 O2 0.74850 -0.02920 0.51720 0.00849 O3 0.53400 0.15660 0.41100 0.00988 O4 0.59930 0.03080 0.17470 0.01001 O5 -0.01880 0.87130 -0.14910 0.01064 O6 0.25330 0.94970 0.11130 0.00988 O7 0.09090 0.77400 0.17230 0.01153 O8 0.23420 0.73280 -0.02550 0.01026 Wat 0.07150 0.08250 0.68400 0.01241