data_global
_chemical_name_mineral 'Dundasite'
loop_
_publ_author_name
'Cocco G'
'Fanfani L'
'Nunzi A'
'Zanazzi P F'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 38 
_journal_year 1972
_journal_page_first 564
_journal_page_last 569
_publ_section_title
;
 The crystal structure of dundasite
;
_database_code_amcsd 0014455
_chemical_compound_source 'Gonnesa, Sardinia, Italy'
_chemical_formula_sum 'Pb Al2 C2 O11 H6'
_cell_length_a 9.08
_cell_length_b 16.37
_cell_length_c 5.62
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 835.355
_exptl_crystal_density_diffrn      3.715
_symmetry_space_group_name_H-M 'P b n m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-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
Pb   0.51310   0.41170   0.75000   0.03040
Al   0.33380   0.19980   0.99800   0.02913
C1   0.41720   0.35060   0.25000   0.03166
C2   0.75990   0.45020   0.25000   0.03546
O1   0.40270   0.30970   0.05210   0.03420
O2   0.45990   0.42240   0.25000   0.02660
O3   0.77370   0.41120   0.05060   0.03166
O4   0.73990   0.52420   0.25000   0.03546
O-H1   0.19690   0.20760   0.25000   0.02406
O-H2   0.47050   0.18560   0.75000   0.02406
O-H3   0.46190   0.16680   0.25000   0.03040
O-H4   0.21820   0.23750   0.75000   0.03040
Wat   0.10850   0.45760   0.25000   0.04939