data_global
_amcsd_formula_title '(Ni.45Mg.55)3(PO4)2'
loop_
_publ_author_name
'Nord A G'
'Stefanidis T'
_journal_name_full 'Physics and Chemistry of Minerals'
_journal_volume 10 
_journal_year 1983
_journal_page_first 10
_journal_page_last 15
_publ_section_title
;
 Crystallographic studies of some olivine-related (Ni,Mg)3(PO4)2
 solid solutions
 Sample: Ni/Mg-3c
;
_database_code_amcsd 0007355
_chemical_formula_sum '(Ni1.36 Mg1.64) P2 O8'
_cell_length_a 10.177
_cell_length_b 4.713
_cell_length_c 5.889
_cell_angle_alpha 90
_cell_angle_beta 90.74
_cell_angle_gamma 90
_cell_volume 282.438
_exptl_crystal_density_diffrn      3.641
_symmetry_space_group_name_H-M 'P 1 21/a 1'
loop_
_space_group_symop_operation_xyz
  'x,y,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_occupancy
_atom_site_U_iso_or_equiv
NiM1   0.00000   0.00000   0.50000   0.68000   0.00887
MgM1   0.00000   0.00000   0.50000   0.32000   0.00887
NiM2   0.27600  -0.01300   0.24500   0.34000   0.00887
MgM2   0.27600  -0.01300   0.24500   0.66000   0.00887
P   0.09600   0.42300   0.25300   1.00000   0.02533
O1   0.11400   0.74100   0.27000   1.00000   0.01013
O2   0.46100   0.18700   0.24500   1.00000   0.01013
O3   0.17800   0.30200   0.05400   1.00000   0.01013
O4   0.17200   0.27500   0.46000   1.00000   0.01013