data_global _chemical_name_mineral 'Bromellite' loop_ _publ_author_name 'Aminoff G' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 62 _journal_year 1925 _journal_page_first 113 _journal_page_last 122 _publ_section_title ; Ueber Berylliumoxyd als Mineral und dessen Kristallstruktur. _cod_database_code 1010943 ; _database_code_amcsd 0017664 _chemical_formula_sum 'Be O' _cell_length_a 2.685 _cell_length_b 2.685 _cell_length_c 4.369 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 27.277 _exptl_crystal_density_diffrn 3.045 _symmetry_space_group_name_H-M 'P 63 m c' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-x+y,1/2+z' 'x-y,x,1/2+z' '-y,-x,z' '-y,x-y,z' 'x-y,-y,1/2+z' '-x,-y,1/2+z' 'x,x-y,z' '-x+y,-x,z' 'y,x,1/2+z' 'y,-x+y,1/2+z' '-x+y,y,z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Be1 0.33333 0.66667 0.00000 O1 0.33333 0.66667 0.37500