data_9007450
_chemical_name 'Lazulite'
loop_
_publ_author_name
'Lindberg M L'
'Christ C L'
_journal_name_full "Acta Crystallographica"
_journal_volume 12
_journal_year 1959
_journal_page_first 695
_journal_page_last 697
_publ_section_title
;
 Crystal structures of the isostructural minerals lazulite,
 scorzalite and barbosalite
;
_chemical_formula_sum 'Mg Al2 P2 O10 H2'
_cell_length_a 7.16
_cell_length_b 7.26
_cell_length_c 7.24
_cell_angle_alpha 90
_cell_angle_beta 120.67
_cell_angle_gamma 90
_cell_volume 323.703
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-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_Uiso_or_equiv
Mg   0.00000   0.00000   0.00000   0.00760
Al   0.73200   0.26600   0.00400   0.00760
P   0.25000   0.11300   0.74900   0.00760
O1   0.22200   0.00000   0.90100   0.00760
O2   0.28600   0.00000   0.58900   0.00760
O3   0.04800   0.25300   0.13000   0.00760
O4   0.44300   0.24400   0.37700   0.00760
O-H5   0.75400   0.13500   0.74900   0.00760