data_global _chemical_name_mineral 'h-Magnetite' loop_ _publ_author_name 'Koch-Muller M' 'Mugnaioli E' 'Rhede D' 'Speziale S' 'Kolb U' 'Wirth R' _journal_name_full 'American Mineralogist' _journal_volume 99 _journal_year 2014 _journal_page_first 2405 _journal_page_last 2415 _publ_section_title ; Synthesis of a quenchable high-pressure form of magnetite (h-Fe3O4) with composition Fe1(Fe2+0.75Mg0.26)Fe2(Fe3+0.70Cr0.15Al0.11Si0.04)2O4 Note: Sample Crystal 1 ; _database_code_amcsd 0020414 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Fe2.15 Cr.3 Al.22 Si.08 Mg.26 O4' _cell_length_a 9.8 _cell_length_b 9.6 _cell_length_c 2.87 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 270.010 _exptl_crystal_density_diffrn 5.269 _symmetry_space_group_name_H-M 'A m a m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2+y,1/2+z' '1/2+x,-y,z' '1/2+x,1/2-y,1/2+z' '1/2-x,y,-z' '1/2-x,1/2+y,1/2-z' 'x,y,-z' 'x,1/2+y,1/2-z' '-x,-y,z' '-x,1/2-y,1/2+z' '1/2-x,y,z' '1/2-x,1/2+y,1/2+z' '1/2+x,-y,-z' '1/2+x,1/2-y,1/2-z' '-x,-y,-z' '-x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv Fe1 0.43090 0.63290 1.00000 0.70000 0.00500 Cr1 0.43090 0.63290 1.00000 0.15000 0.00500 Al1 0.43090 0.63290 1.00000 0.11000 0.00500 Si1 0.43090 0.63290 1.00000 0.04000 0.00500 Fe2 0.25000 0.37600 0.50000 0.75000 0.01200 Mg2 0.25000 0.37600 0.50000 0.26000 0.01200 O1 0.50000 0.50000 0.50000 1.00000 0.03200 O2 0.25000 0.54000 1.00000 1.00000 0.10000 O3 0.37800 0.27500 1.00000 1.00000 0.02200