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
 P = room pressure
;
_database_code_amcsd 0001679
_chemical_formula_sum 'Fe Si O3'
_cell_length_a 9.7075
_cell_length_b 9.0807
_cell_length_c 5.2347
_cell_angle_alpha 90
_cell_angle_beta 108.46
_cell_angle_gamma 90
_cell_volume 437.700
_exptl_crystal_density_diffrn      4.004
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+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_U_iso_or_equiv
Fe1   0.25120   0.65380   0.22620   0.01165
Fe2   0.22560   0.01450   0.22390   0.01431
SiA   0.04540   0.33840   0.29150   0.00811
SiB   0.55310   0.83340   0.24310   0.00975
O1A   0.87100   0.33800   0.17800   0.00785
O1B   0.37900   0.83700   0.13700   0.00747
O2A   0.12500   0.49600   0.33500   0.00887
O2B   0.63300   0.98100   0.38700   0.01482
O3A   0.10600   0.26600   0.59700   0.01836
O3B   0.60800   0.70200   0.47000   0.02026