data_global
_chemical_name_mineral 'Dawsonite'
loop_
_publ_author_name
'Frueh A J'
'Golightly J P'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 9 
_journal_year 1967
_journal_page_first 51
_journal_page_last 56
_publ_section_title
;
 The crystal structure of dawsonite NaAl(CO3)(OH)2
;
_database_code_amcsd 0005083
_chemical_compound_source 'McGill University, Montreal, Quebec, Canada'
_chemical_formula_sum 'Na Al C O5 H2'
_cell_length_a 6.710
_cell_length_b 10.411
_cell_length_c 5.58
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 389.807
_exptl_crystal_density_diffrn      2.454
_symmetry_space_group_name_H-M 'I m a m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'x,y,1/2-z'
  '1/2+x,1/2+y,-z'
  '-x,-y,1/2+z'
  '1/2-x,1/2-y,+z'
  '-x,y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,-y,-z'
  '1/2+x,1/2-y,1/2-z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,-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
Na   0.25000   0.75000   0.25000   0.00038
Al   0.00000   0.50000   0.00000   0.00038
C   0.00000   0.25400   0.25000   0.00038
O1   0.00000   0.13300   0.25000   0.00038
O2   0.00000   0.31500   0.05200   0.00038
O-H   0.18000   0.52500   0.25000   0.00038