data_global
_chemical_name_mineral 'Stenhuggarite'
loop_
_publ_author_name
'Coda A'
'Dal Negro A'
'Sabelli C'
'Tazzoli V'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 33 
_journal_year 1977
_journal_page_first 1807
_journal_page_last 1811
_publ_section_title
;
 The crystal structure of stenhuggarite
;
_database_code_amcsd 0009591
_chemical_formula_sum 'Ca Fe Sb As2 O7'
_cell_length_a 16.144
_cell_length_b 16.144
_cell_length_c 10.706
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 2790.291
_exptl_crystal_density_diffrn      4.566
_symmetry_space_group_name_H-M 'I 41/a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '3/4+y,1/4-x,1/4-z'
  '1/4+y,3/4-x,3/4-z'
  '3/4-y,1/4+x,1/4+z'
  '1/4-y,3/4+x,3/4+z'
  '1/2+x,y,1/2-z'
  '+x,1/2+y,-z'
  '1/2-x,-y,1/2+z'
  '-x,1/2-y,+z'
  '3/4-y,3/4+x,3/4-z'
  '1/4-y,1/4+x,1/4-z'
  '3/4+y,3/4-x,3/4+z'
  '1/4+y,1/4-x,1/4+z'
  '-x,-y,-z'
  '1/2-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_U_iso_or_equiv
Ca   0.34930   0.43880  -0.47680   0.00608
Fe   0.23730   0.25750  -0.49160   0.00519
Sb   0.32658   0.42697   0.01620   0.00887
As1   0.38500   0.29810  -0.26150   0.00709
As2   0.39730   0.31460  -0.70390   0.00519
O1   0.32720   0.31540  -0.12250   0.01368
O2   0.25270   0.48450  -0.10070   0.00747
O3   0.24680   0.34480   0.08060   0.01039
O4   0.30490   0.31000  -0.37380   0.01216
O5   0.30200   0.32830  -0.63170   0.00887
O6   0.42010   0.40080  -0.28830   0.01431
O7   0.45440   0.33890  -0.56120   0.01039