data_global _amcsd_formula_title 'Al2 Na O6 Sb' loop_ _publ_author_name 'Aminoff G' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 60 _journal_year 1924 _journal_page_first 262 _journal_page_last 274 _publ_section_title ; Ueber ein neues Mineral von Langban. _cod_database_code 1010488 ; _database_code_amcsd 0017404 _chemical_formula_sum 'Na Sb Al2' _cell_length_a 5.4 _cell_length_b 5.4 _cell_length_c 8.81 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 222.482 _exptl_crystal_density_diffrn 2.966 _symmetry_space_group_name_H-M 'P 63/m m 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,1/2-z' 'x-y,x,1/2+z' '-y,-x,z' 'y,x,-z' 'y,-x+y,-z' '-y,x-y,z' 'x-y,-y,1/2+z' '-x+y,y,1/2-z' 'x,y,1/2-z' '-x,-y,1/2+z' 'x,x-y,z' '-x,-x+y,-z' 'x-y,x,-z' '-x+y,-x,z' 'y,x,1/2+z' '-y,-x,1/2-z' '-y,x-y,1/2-z' 'y,-x+y,1/2+z' '-x+y,y,z' 'x-y,-y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Na1 0.00000 0.00000 0.00000 Sb1 0.33333 0.66667 0.75000 Al1 0.33333 0.66667 0.08700