data_global
_amcsd_formula_title '(Ni.6Mg.4)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-2b
;
_database_code_amcsd 0007354
_chemical_formula_sum '(Ni1.8 Mg1.2) P2 O8'
_cell_length_a 10.154
_cell_length_b 4.706
_cell_length_c 5.870
_cell_angle_alpha 90
_cell_angle_beta 90.83
_cell_angle_gamma 90
_cell_volume 280.467
_exptl_crystal_density_diffrn      3.845
_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   0.80000   0.01520
MgM1   0.00000   0.00000   0.50000   0.20000   0.01520
NiM2   0.27600  -0.01300   0.24400   0.50000   0.01520
MgM2   0.27600  -0.01300   0.24400   0.50000   0.01520
P   0.09600   0.42200   0.25500   1.00000   0.01393
O1   0.11100   0.73800   0.26900   1.00000  -0.00253
O2   0.46100   0.18400   0.24900   1.00000  -0.00253
O3   0.18000   0.30000   0.05700   1.00000  -0.00253
O4   0.16900   0.27400   0.45900   1.00000  -0.00253