data_global
_chemical_name_mineral 'Claudetite'
loop_
_publ_author_name
'Pertlik F'
_journal_name_full 'Monatshefte fur Chemie'
_journal_volume 109 
_journal_year 1978
_journal_page_first 277
_journal_page_last 282
_publ_section_title
;
 Verfeinerung der kristallstruktur des minerals claudetit
;
_database_code_amcsd 0014664
_chemical_formula_sum 'As2 O3'
_cell_length_a 5.25
_cell_length_b 12.99
_cell_length_c 4.53
_cell_angle_alpha 90
_cell_angle_beta 93.88
_cell_angle_gamma 90
_cell_volume 308.227
_exptl_crystal_density_diffrn      4.263
_symmetry_space_group_name_H-M 'P 1 21/n 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-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
As1   0.25770   0.10170   0.04230   0.00697
As2   0.35840   0.35040   0.00430   0.00823
O1   0.43530   0.21900   0.06240   0.01520
O2   0.66130   0.39750   0.15130   0.01773
O3   0.96080   0.13810   0.14520   0.01520