data_global _amcsd_formula_title '(Ni.45Mg.55)10Ge3O16' loop_ _publ_author_name 'Fleet M E' 'Barbier J' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 45 _journal_year 1989 _journal_page_first 201 _journal_page_last 205 _publ_section_title ; Structure of aerugite (Ni8.5As3O16) and interrelated arsenate and germanate structural series ; _database_code_amcsd 0009829 _chemical_formula_sum '(Ni4.533 Mg5.467) Ge3 O16' _cell_length_a 10.1250 _cell_length_b 10.1250 _cell_length_c 10.1250 _cell_angle_alpha 33.790 _cell_angle_beta 33.790 _cell_angle_gamma 33.790 _cell_volume 286.075 _exptl_crystal_density_diffrn 5.066 _symmetry_space_group_name_H-M 'R -3 m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-z,-y' '-z,-x,-y' 'y,x,z' 'y,z,x' '-z,-y,-x' '-x,-y,-z' 'x,z,y' 'z,x,y' '-y,-x,-z' '-y,-z,-x' 'z,y,x' 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 Ni1 0.50000 0.50000 0.50000 0.34500 0.00395 Mg1 0.50000 0.50000 0.50000 0.65500 0.00395 Ni2 0.00000 0.50000 0.50000 0.55200 0.00325 Mg2 0.00000 0.50000 0.50000 0.44800 0.00325 Ni3 0.75735 0.24897 0.24897 0.42200 0.00371 Mg3 0.75735 0.24897 0.24897 0.57800 0.00371 Gel 0.00000 0.00000 0.00000 1.00000 0.00263 Ge2 0.18915 0.18915 0.18915 1.00000 0.00281 O1 0.12717 0.12717 0.12717 1.00000 0.00527 O2 0.37637 0.37637 0.37637 1.00000 0.00484 O3 0.65943 0.11284 0.11284 1.00000 0.00503 O4 0.12209 0.62598 0.62598 1.00000 0.00493