data_global _chemical_name_mineral 'Luogufengite' loop_ _publ_author_name 'Kelm K' 'Mader W' _journal_name_full 'Zeitschrift fur Anorganische und Allgemeine Chemie' _journal_volume 631 _journal_year 2005 _journal_page_first 2383 _journal_page_last 2389 _publ_section_title ; Synthesis and structural analysis of e-Fe2O3 ; _database_code_amcsd 0021087 _chemical_compound_source 'synthetic by heating nontronite' _chemical_formula_sum 'Fe2 O3' _cell_length_a 5.0715 _cell_length_b 8.7359 _cell_length_c 9.4178 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 417.247 _exptl_crystal_density_diffrn 5.084 _symmetry_space_group_name_H-M 'P n a 21' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,z' '1/2-x,1/2+y,1/2+z' '-x,-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Fe1 0.67680 0.84270 0.00000 0.00494 Fe2 0.20400 0.35090 0.77260 0.00621 Fe3 0.80700 0.66050 0.69300 0.00697 Fe4 0.68520 0.46340 0.98300 0.00461 O1 0.33700 0.85300 0.88700 0.00633 O2 0.01900 0.47400 0.61000 0.00633 O3 0.45300 0.67700 0.65100 0.00633 O4 0.52700 0.66900 0.10000 0.00633 O5 0.86800 0.33400 0.86300 0.00633 O6 0.33600 0.51300 0.89100 0.00633