data_global
_chemical_name_mineral 'Struvite'
loop_
_publ_author_name
'Abbona F'
'Calleri M'
'Ivaldi G'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 40 
_journal_year 1984
_journal_page_first 223
_journal_page_last 227
_publ_section_title
;
 Synthetic struvite MgNH4PO4*6H2O: Correct polarity
 and surface features of some complementary forms
;
_database_code_amcsd 0019944
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Mg N H16 P O10'
_cell_length_a 6.955
_cell_length_b 6.142
_cell_length_c 11.218
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 479.206
_exptl_crystal_density_diffrn      1.701
_symmetry_space_group_name_H-M 'P m n 21'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,-y,1/2+z'
  '-x,y,z'
  '1/2-x,-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
Mg   0.00000   0.62320   0.62830   0.01760
N   0.00000   0.63410   0.26730   0.03320
H1   0.00000   0.76100   0.22400   0.03970
H2   0.00000   0.66600   0.34800   0.03970
H3   0.89500   0.55100   0.24800   0.03970
P   0.00000   0.00650   0.00050   0.00430
O1   0.00000   0.02200   0.13780   0.02260
O2   0.00000   0.23800   0.94650   0.02180
O3   0.81790   0.88630   0.95840   0.02110
OW1   0.00000   0.31630   0.71370   0.03760
H11   0.00000   0.30500   0.78500   0.04490
H12   0.00000   0.18400   0.68500   0.04490
OW2   0.00000   0.92140   0.53560   0.04060
H21   0.89700   0.98600   0.50300   0.04890
OW3   0.78250   0.73690   0.73820   0.02650
H31   0.81500   0.79500   0.80600   0.03190
H32   0.72000   0.81500   0.70200   0.03190
OW4   0.78920   0.51470   0.51480   0.03210
H41   0.76800   0.38700   0.51200   0.03850
H42   0.70200   0.59000   0.49300   0.03850