data_global
_chemical_name_mineral 'Yazganite'
loop_
_publ_author_name
'Sarp H'
'Cerny R'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 17 
_journal_year 2005
_journal_page_first 367
_journal_page_last 373
_publ_section_title
;
 Yazganite, NaFe3+2(Mg,Mn)(AsO4)3*H2O, a new mineral:
 its description and crystal structure
 Note: variant of the johillerite structure, alluaudite group
;
_database_code_amcsd 0007100
_chemical_compound_source 'Volcanic complex of Erciyes, Kiranardi, Turkey'
_chemical_formula_sum 'Na Fe2 (Mg.656 Mn.344) As3 O13 H2'
_cell_length_a 12.181
_cell_length_b 12.807
_cell_length_c 6.6391
_cell_angle_alpha 90
_cell_angle_beta 112.441
_cell_angle_gamma 90
_cell_volume 957.282
_exptl_crystal_density_diffrn      4.193
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-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
Na   0.00000   0.50000   0.00000   1.00000   0.01750
Fe3+   0.28082   0.34398   0.36711   1.00000   0.00820
Mg   0.00000   0.73268   0.25000   0.65600   0.01420
Mn   0.00000   0.73268   0.25000   0.34400   0.01420
As1   0.00000   0.27992   0.25000   1.00000   0.00850
As2   0.24268   0.10706   0.12897   1.00000   0.00870
O1   0.32910   0.49190   0.38900   1.00000   0.01620
O2   0.38540   0.09110   0.18830   1.00000   0.01750
O3   0.10710   0.36270   0.24410   1.00000   0.01290
O4   0.32820   0.33170   0.11260   1.00000   0.01250
O5   0.22540   0.18140   0.33030   1.00000   0.01130
O6   0.04680   0.20440   0.47590   1.00000   0.01380
Wat   0.99700   0.00040   0.27200   0.50000   0.02000