data_global _chemical_name_mineral 'Enstatite' loop_ _publ_author_name 'Takane K' _journal_name_full 'Proceedings of the Japan Academy' _journal_volume 8 _journal_year 1932 _journal_page_first 308 _journal_page_last 311 _publ_section_title ; Crystal Structure of Bronzite from Chichi-jiama in the Bonin Islands _cod_database_code 1011018 ; _database_code_amcsd 0017925 _chemical_formula_sum '(Mg.845 Fe.155) Si O3' _cell_length_a 18.15999 _cell_length_b 8.84 _cell_length_c 5.19 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 833.173 _exptl_crystal_density_diffrn 3.357 _symmetry_space_group_name_H-M 'P b c a' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,1/2+z' '-x,1/2+y,1/2-z' '1/2-x,1/2+y,z' '1/2+x,1/2-y,-z' '1/2+x,y,1/2-z' '1/2-x,-y,1/2+z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Mg1 0.12500 0.33300 0.37500 0.84500 Fe1 0.12500 0.33300 0.37500 0.15500 Mg2 0.12500 -0.04200 0.37500 0.84500 Fe2 0.12500 -0.04200 0.37500 0.15500 Si1 0.02200 -0.34700 0.29200 1.00000 Si2 0.22800 -0.15300 0.04200 1.00000 O1 0.06100 0.12500 0.20800 1.00000 O2 0.06100 0.51400 0.20800 1.00000 O3 0.04200 -0.25000 0.04200 1.00000 O4 0.18900 0.37800 0.04200 1.00000 O5 0.18900 0.00000 0.04200 1.00000 O6 0.20800 -0.25000 0.29200 1.00000