data_global _amcsd_formula_title '(Ni.73Mg.27)3(PO4)2' loop_ _publ_author_name 'Nord A G' 'Stefanidis T' _journal_name_full 'Physics and Chemistry of Minerals' _journal_volume 10 _journal_year 1983 _journal_page_first 10 _journal_page_last 15 _publ_section_title ; Crystallographic studies of some olivine-related (Ni,Mg)3(PO4)2 solid solutions Sample: Ni/Mg-1a ; _database_code_amcsd 0007353 _chemical_formula_sum '(Ni2.2 Mg.8) P2 O8' _cell_length_a 10.122 _cell_length_b 4.700 _cell_length_c 5.838 _cell_angle_alpha 90 _cell_angle_beta 91.11 _cell_angle_gamma 90 _cell_volume 277.681 _exptl_crystal_density_diffrn 4.049 _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_occupancy _atom_site_U_iso_or_equiv NiM1 0.00000 0.00000 0.50000 0.88000 0.04686 MgM1 0.00000 0.00000 0.50000 0.12000 0.04686 NiM2 0.27400 -0.01300 0.24000 0.66000 0.04686 MgM2 0.27400 -0.01300 0.24000 0.34000 0.04686 P 0.08900 0.42500 0.25700 1.00000 0.04939 O1 0.11300 0.75100 0.27000 1.00000 -0.01140 O2 0.43600 0.20300 0.24800 1.00000 -0.01140 O3 0.18400 0.27600 0.02800 1.00000 -0.01140 O4 0.17200 0.27900 0.47200 1.00000 -0.01140