data_global _chemical_name_mineral 'Ferrowyllieite' loop_ _publ_author_name 'Moore P B' 'Molin-Case J' _journal_name_full 'American Mineralogist' _journal_volume 59 _journal_year 1974 _journal_page_first 280 _journal_page_last 290 _publ_section_title ; Contribution to pegmatite phosphate giant crystal paragenesis: II. The crystal chemistry of wyllieite, Na2Fe2Al[PO4]3, a primary phase ; _database_code_amcsd 397 _chemical_compound_source 'Victory mine pegmatite, near Custer, South Dakota, USA' _chemical_formula_sum 'Na2.31 Ca.5 Mn.5 Fe4 Mg.5 Al1.5 P6 O24' _cell_length_a 11.868 _cell_length_b 12.382 _cell_length_c 6.354 _cell_angle_alpha 90.0 _cell_angle_beta 114.52 _cell_angle_gamma 90.0 _cell_volume 849.512 _exptl_crystal_density_diffrn 3.7 _symmetry_space_group_name_H-M 'P 1 21/n 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+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 Na1a 0.5 0.0 0.0 0.91 0.0152 Ca1b 0.4903 0.0013 0.5045 0.25 0.00203 Mn1b 0.4903 0.0013 0.5045 0.25 0.00203 Na2 -0.0004 -0.0218 0.2485 0.7 0.0152 Fe1 -0.0005 0.2638 0.2366 0.75 0.00988 Mg1 -0.0005 0.2638 0.2366 0.25 0.00988 Fe2a 0.2726 -0.3516 0.3626 1.0 0.01381 Al2b 0.2187 -0.1664 0.6434 0.75 0.0076 Fe2b 0.2187 -0.1664 0.6434 0.25 0.0076 P1 -0.0072 -0.2854 0.2592 1.0 0.00823 P2a 0.2381 -0.1143 0.1457 1.0 0.00925 P2b 0.2376 0.0971 0.6175 1.0 0.01026 O1a 0.4531 -0.2889 0.5509 1.0 0.01355 O1b 0.4498 -0.717 0.0167 1.0 0.01241 O2a 0.082 -0.3737 0.2429 1.0 0.01608 O2b 0.1104 -0.649 0.7199 1.0 0.01811 O3a 0.3432 -0.347 0.1114 1.0 0.01646 O3b 0.3189 -0.6733 0.5866 1.0 0.01659 O4a 0.1219 0.402 0.2807 1.0 0.01393 O4b 0.1288 -0.4148 0.8536 1.0 0.01722 O5a 0.2216 -0.184 0.3288 1.0 0.0152 O5b 0.238 -0.8336 0.8177 1.0 0.01659 O6a 0.331 -0.5083 0.3837 1.0 0.0195 O6b 0.3226 -0.5127 0.8839 1.0 0.02077