data_global _chemical_name_mineral 'Clinoferrosilite' loop_ _publ_author_name 'Hugh-Jones D A' 'Woodland A B' 'Angel R J' _journal_name_full 'American Mineralogist' _journal_volume 79 _journal_year 1994 _journal_page_first 1032 _journal_page_last 1041 _publ_section_title ; The structure of high-pressure C2/c ferrosilite and crystal chemistry of high-pressure C2/c pyroxenes Sample: fictive hedenbergite-like C2/c FeSiO3 phase ; _database_code_amcsd 0001681 _chemical_formula_sum 'Fe Si O3' _cell_length_a 9.73 _cell_length_b 9.11 _cell_length_c 5.23 _cell_angle_alpha 90 _cell_angle_beta 107.8 _cell_angle_gamma 90 _cell_volume 441.396 _exptl_crystal_density_diffrn 3.971 _symmetry_space_group_name_H-M 'C 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' '1/2-x,1/2-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Fe1 0.00000 0.90100 0.25000 Fe2 0.00000 0.26300 0.25000 Si 0.29600 0.08500 0.25200 O1 0.12400 0.09000 0.15900 O2 0.37500 0.24000 0.36200 O3 0.35900 0.03100 0.04500