data_global
_chemical_name_mineral 'Srebrodolskite'
loop_
_publ_author_name
'Vanpeteghem C B'
'Angel R J'
'Zhao J'
'Ross N L'
'Redhammer G J'
'Seifert F'
_journal_name_full 'Physics and Chemistry of Minerals'
_journal_volume 35 
_journal_year 2008
_journal_page_first 493
_journal_page_last 504
_publ_section_title
;
 The effect of oxygen vacancies and aluminium substitution on the
 high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5
 Note: x = 0.37
 Note: P = 6.267 GPa
;
_database_code_amcsd 0017769
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Ca2 (Fe1.63 Al.37) O5'
_cell_length_a 5.3246
_cell_length_b 14.4558
_cell_length_c 5.5273
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 425.444
_exptl_crystal_density_diffrn      4.077
_symmetry_space_group_name_H-M 'P n m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-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
_atom_site_U_iso_or_equiv
Ca   0.48320   0.10832   0.02380   1.00000   0.00811
FeM   0.00000   0.00000   0.00000   0.93000   0.00595
AlM   0.00000   0.00000   0.00000   0.07000   0.00595
FeT   0.94700   0.25000   0.93340   0.70000   0.00456
AlT   0.94700   0.25000   0.93340   0.30000   0.00456
O1   0.26400   0.98370   0.23840   1.00000   0.00798
O2   0.02740   0.14170   0.07290   1.00000   0.00811
O3   0.60600   0.25000   0.87100   1.00000   0.00697