data_global
_chemical_name_mineral 'Effenbergerite'
loop_
_publ_author_name
'Lin H C'
'Liao F L'
'Wang S L'
_journal_name_full 'Acta Crystallographica, Section C'
_journal_volume 48 
_journal_year 1992
_journal_page_first 1297
_journal_page_last 1299
_publ_section_title
;
 Structure of BaCuSi4O10
;
_database_code_amcsd 0018737
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Cu Ba Si4 O10'
_cell_length_a 7.440
_cell_length_b 7.440
_cell_length_c 16.097
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 891.027
_exptl_crystal_density_diffrn      3.528
_symmetry_space_group_name_H-M 'P 4/n c c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-y,1/2-x,1/2+z'
  '1/2+y,1/2+x,1/2-z'
  '1/2+y,-x,-z'
  '1/2-y,x,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '1/2+x,1/2+y,-z'
  '1/2-x,1/2-y,z'
  'y,x,1/2+z'
  '-y,-x,1/2-z'
  '-y,1/2+x,-z'
  'y,1/2-x,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_U_iso_or_equiv
Cu   0.75000   0.75000  -0.09440   0.00900
Ba   0.75000   0.25000   0.00000   0.01200
Si   0.98220  -0.06180   0.15430   0.00900
O1   0.77630  -0.00070   0.13650   0.01600
O2   0.02470  -0.02470   0.25000   0.03100
O3   0.46880   0.11300   0.09090   0.01700