data_global _chemical_name_mineral 'Akdalaite' loop_ _publ_author_name 'Yamaguchi G' 'Okumiya M' 'Ono S' _journal_name_full 'Bulletin of the Chemical Society of Japan' _journal_volume 42 _journal_year 1969 _journal_page_first 2247 _journal_page_last 2249 _publ_section_title ; Refinement of the structure of tohdite 5Al2O3*H2O ; _database_code_amcsd 0012146 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Al5 O8' _cell_length_a 5.575 _cell_length_b 5.575 _cell_length_c 8.761 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 235.816 _exptl_crystal_density_diffrn 3.703 _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 _atom_site_U_iso_or_equiv Al1 0.16470 0.32940 0.37080 0.00583 Al2 0.66667 0.33333 0.15330 0.00583 Al3 0.33333 0.66667 0.06110 0.00583 O1 0.00000 0.00000 0.00000 0.00583 O2 0.50980 0.01960 0.01430 0.00583 O3 0.82910 0.65820 0.26660 0.00583 O4 0.33333 0.66667 0.26380 0.00583