data_global
_chemical_name_mineral 'Albite-Ge'
loop_
_publ_author_name
'Kroll H'
'Flogel J'
'Breit U'
'Lons J'
'Pentinghaus H'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 3 
_journal_year 1991
_journal_page_first 739
_journal_page_last 749
_publ_section_title
;
 Order and anti-order in Ge-substituted alkali feldspars
 Sample: Na[AlGe3O8] synthesized at 980 deg C
;
_database_code_amcsd 0006422
_chemical_formula_sum 'Na.25 (Al.25 Ge.75) O2'
_cell_length_a 8.411
_cell_length_b 13.291
_cell_length_c 7.342
_cell_angle_alpha 94.38
_cell_angle_beta 116.28
_cell_angle_gamma 90.87
_cell_volume 732.681
_exptl_crystal_density_diffrn      3.588
_symmetry_space_group_name_H-M 'C -1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,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
Na1   0.26870  -0.01970   0.17390   0.25000   0.02001
Na2   0.28210   0.04480   0.08186   0.25000   0.02001
Na3   0.27820   0.02940   0.11480   0.25000   0.02001
Na4   0.26290   0.00990   0.12810   0.25000   0.02001
AlT10   0.01093   0.15791   0.21195   0.21200   0.00937
GeT10   0.01093   0.15791   0.21195   0.78800   0.00937
AlT1m   0.00204   0.81216   0.22975   0.43600   0.00963
GeT1m   0.00204   0.81216   0.22975   0.56400   0.00963
AlT20   0.68800   0.10497   0.31316   0.15000   0.01026
GeT20   0.68800   0.10497   0.31316   0.85000   0.01026
AlT2m   0.67649   0.87436   0.35526   0.20200   0.00988
GeT2m   0.67649   0.87436   0.35526   0.79800   0.00988
OA1   0.01080   0.12740   0.97900   1.00000   0.01925
OA2   0.57510   0.98650   0.27080   1.00000   0.01330
OB0   0.82040   0.09140   0.18620   1.00000   0.02090
OBm   0.80920   0.83630   0.24490   1.00000   0.03040
OC0   0.00230   0.28370   0.28460   1.00000   0.01583
OCm   0.01480   0.68170   0.19470   1.00000   0.01760
OD0   0.20480   0.10590   0.37950   1.00000   0.01976
ODm   0.19200   0.86530   0.43080   1.00000   0.02609