data_global
_chemical_name_mineral 'Alfredopetrovite'
loop_
_publ_author_name
'Morris R E'
'Harrison W T A'
'Stucky G D'
'Cheetham A K'
_journal_name_full 'Journal of Solid State Chemistry'
_journal_volume 99 
_journal_year 1992
_journal_page_first 200
_journal_page_last 200
_publ_section_title
;
 On the structure of Al2(SeO3)3*6H2O
;
_database_code_amcsd 0021054
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Al2 Se3 O15 H12'
_cell_length_a 8.8020
_cell_length_b 8.8020
_cell_length_c 10.7070
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 718.391
_exptl_crystal_density_diffrn      2.510
_symmetry_space_group_name_H-M 'P -6 2 c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  '-x+y,-x,1/2-z'
  'y,x,-z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  'x,y,1/2-z'
  '-x,-x+y,-z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  '-y,x-y,1/2-z'
  'x-y,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Al   0.66670   0.33330   0.03330   0.01430
Se   0.38176   0.25734   0.25000   0.01360
O1   0.51740   0.68450   0.42870   0.01920
O2   0.62130   0.13440   0.12810   0.01780
O3   0.23630   0.32470   0.25000   0.01950
H1   0.19000   0.40900   0.37800   0.05000
H2   0.08000   0.48000   0.42000   0.04000