data_global _chemical_name_mineral 'Fayalite' loop_ _publ_author_name 'Kudoh Y' 'Takeda H' _journal_name_full 'Physica B' _journal_volume 140 _journal_year 1986 _journal_page_first 333 _journal_page_last 336 _publ_section_title ; Single crystal X-ray diffraction study on the bond compressibility of fayalite, Fe2SiO4 and rutile, TiO2 under high pressure Sample: P = 140 kbar ; _database_code_amcsd 0015004 _chemical_formula_sum 'Fe2 Si O4' _cell_length_a 4.739 _cell_length_b 9.899 _cell_length_c 5.979 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 280.483 _exptl_crystal_density_diffrn 4.826 _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 Fe1 0.00000 0.00000 0.00000 0.00051 Fe2 0.97710 0.27460 0.25000 0.01241 Si 0.42650 0.08910 0.25000 0.00329 O1 0.80870 0.09130 0.25000 0.03356 O2 0.18660 0.46240 0.25000 0.00811 O3 0.30100 0.18550 0.04550 0.00013