data_global
_amcsd_formula_title 'Fe7SiO10'
loop_
_publ_author_name
'Smuts J'
'Steyn J G D'
'Boeyens J C A'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 25 
_journal_year 1969
_journal_page_first 1251
_journal_page_last 1255
_publ_section_title
;
 The crystal structure of an iron silicate, iscorite
;
_database_code_amcsd 0009352
_chemical_formula_sum 'Fe7 Si O10'
_cell_length_a 21.4
_cell_length_b 3.06
_cell_length_c 5.88
_cell_angle_alpha 90
_cell_angle_beta 98
_cell_angle_gamma 90
_cell_volume 381.299
_exptl_crystal_density_diffrn      5.043
_symmetry_space_group_name_H-M 'P 1 21/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-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
Fe2+1   0.05530   0.75000   0.14160   0.00950
Fe2+2   0.05320   0.75000   0.66210   0.00925
Fe2+3   0.15990   0.25000   0.45760   0.01406
Fe2+4   0.44450   0.75000   0.35530   0.00963
Fe2+5   0.44710   0.75000   0.84210   0.01127
Fe3+1   0.19310   0.75000   0.97430   0.01330
Fe3+2   0.33450   0.25000   0.03780   0.00963
Si   0.30180   0.75000   0.52510   0.00089
O1   0.04970   0.25000   0.40910   0.00811
O2   0.03900   0.25000   0.88270   0.01089
O3   0.14690   0.75000   0.20250   0.01672
O4   0.14690   0.75000   0.69510   0.03686
O5   0.23420   0.25000   0.01260   0.07016
O6   0.26250   0.25000   0.50740   0.00076
O7   0.34980   0.75000   0.29180   0.03154
O8   0.34310   0.75000   0.80880   0.02305
O9   0.45420   0.25000   0.10580   0.01672
O10   0.45620   0.25000   0.60020   0.02254