data_global _amcsd_formula_title 'Li Mg4 Na3 O30 Si12' loop_ _publ_author_name 'Nguyen N' 'Choisnet J' 'Raveau B' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 34 _journal_year 1980 _journal_page_first 1 _journal_page_last 9 _publ_section_title ; Silicates synthetiques a structure milarite _cod_database_code 1001142 ; _database_code_amcsd 0013401 _chemical_formula_sum 'Na3 Mg4 Li Si12 O30' _cell_length_a 10.155 _cell_length_b 10.155 _cell_length_c 14.158 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 1264.423 _exptl_crystal_density_diffrn 2.601 _symmetry_space_group_name_H-M 'P 6/m c c' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-x+y,1/2+z' 'x,x-y,1/2-z' '-x+y,-x,-z' 'x-y,x,z' '-y,-x,1/2+z' 'y,x,1/2-z' 'y,-x+y,-z' '-y,x-y,z' 'x-y,-y,1/2+z' '-x+y,y,1/2-z' 'x,y,-z' '-x,-y,z' 'x,x-y,1/2+z' '-x,-x+y,1/2-z' 'x-y,x,-z' '-x+y,-x,z' 'y,x,1/2+z' '-y,-x,1/2-z' '-y,x-y,-z' 'y,-x+y,z' '-x+y,y,1/2+z' 'x-y,-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 Na1 0.00000 0.00000 0.25000 1.00000 Na2 0.33333 0.66667 0.00000 1.00000 Mg1 0.33333 0.66667 0.25000 1.00000 Mg2 0.50000 0.00000 0.25000 0.66670 Li1 0.50000 0.00000 0.25000 0.33330 Si1 0.76300 0.11000 0.10800 1.00000 O1 0.73800 0.13800 0.00000 1.00000 O2 0.93700 0.20700 0.13600 1.00000 O3 0.66900 0.16000 0.16400 1.00000