data_global _chemical_name_mineral 'Diaspore' loop_ _publ_author_name 'Friedrich A' 'Wilson D J' 'Haussuhl E' 'Winkler B' 'Morgenroth W' 'Refson K' 'Milman V' _journal_name_full 'Physics and Chemistry of Minerals' _journal_volume 34 _journal_year 2007 _journal_page_first 145 _journal_page_last 157 _publ_section_title ; High-pressure properties of diaspore, AlO(OH) Sample: p = 4.89 GPa ; _database_code_amcsd 0009054 _chemical_formula_sum 'Al O2 H' _cell_length_a 4.335 _cell_length_b 9.34 _cell_length_c 2.820 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 114.179 _exptl_crystal_density_diffrn 3.490 _symmetry_space_group_name_H-M 'P b n m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,y,1/2-z' '-x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2-z' '1/2-x,1/2+y,z' '1/2+x,1/2-y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Al 0.04510 0.85630 0.25000 0.00400 O1 0.70800 0.19800 0.25000 0.00400 O2 0.20100 0.05300 0.25000 0.00400 H 0.39000 0.10000 0.25000 0.05000