data_global
_amcsd_formula_title 'NaGaSi3O8'
loop_
_publ_author_name
'Fleet M E'
_journal_name_full 'American Mineralogist'
_journal_volume 76 
_journal_year 1991
_journal_page_first 92
_journal_page_last 99
_publ_section_title
;
 Structures of low gallium albite (NaGaSi3O8) and intermediate germanium albite
 (NaAlGe3O8): Tetrahedral-site ordering in sodium feldspar
;
_database_code_amcsd 0001343
_chemical_compound_source 'Synthetic'
_chemical_formula_sum '(Ga1.001 Si2.999) Na O8'
_cell_length_a 8.161
_cell_length_b 12.851
_cell_length_c 7.191
_cell_angle_alpha 94.39
_cell_angle_beta 116.52
_cell_angle_gamma 87.38
_cell_volume 672.780
_exptl_crystal_density_diffrn      3.011
_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
Ga1o   0.00922   0.16994   0.20489   0.93500
Si1o   0.00922   0.16994   0.20489   0.06500
Si1m   0.00130   0.81970   0.24140   0.98400
Ga1m   0.00130   0.81970   0.24140   0.01600
Si2o   0.69290   0.10980   0.31180   0.97500
Ga2o   0.69290   0.10980   0.31180   0.02500
Si2m   0.67820   0.88260   0.36180   0.97500
Ga2m   0.67820   0.88260   0.36180   0.02500
Na   0.26890   0.98770   0.14840   1.00000
OA1   0.00920   0.12800   0.95810   1.00000
OA2   0.59210   0.99800   0.28090   1.00000
OBo   0.80820   0.10490   0.18100   1.00000
OBm   0.81740   0.84540   0.26480   1.00000
OCo   0.00420   0.30720   0.27110   1.00000
OCm   0.02800   0.69400   0.22880   1.00000
ODo   0.21530   0.10730   0.38780   1.00000
ODm   0.17790   0.86780   0.44230   1.00000
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Ga1o 0.01164 0.00873 0.00708 -0.00265 0.00430 -0.00013
Si1o 0.01164 0.00873 0.00708 -0.00265 0.00430 -0.00013
Si1m 0.00989 0.00773 0.00608 -0.00014 0.00380 0.00063
Ga1m 0.00989 0.00773 0.00608 -0.00014 0.00380 0.00063
Si2o 0.00899 0.00657 0.00798 -0.00204 0.00292 -0.00013
Ga2o 0.00899 0.00657 0.00798 -0.00204 0.00292 -0.00013
Si2m 0.00899 0.00748 0.00798 -0.00090 0.00316 0.00075
Ga2m 0.00899 0.00748 0.00798 -0.00090 0.00316 0.00075
Na 0.01937 0.05522 0.03495 -0.00749 0.00962 -0.02772
OA1 0.02596 0.01372 0.01143 -0.00166 0.01076 0.00138
OA2 0.01229 0.00798 0.01393 -0.00137 0.00354 0.00267
OBo 0.01672 0.01672 0.01749 -0.00621 0.01014 -0.00354
OBm 0.01621 0.01838 0.02331 0.00152 0.01216 -0.00025
OCo 0.01432 0.01239 0.01736 -0.00431 0.00634 -0.00125
OCm 0.01545 0.01048 0.01368 0.00052 0.00456 -0.00063
ODo 0.01823 0.01331 0.00976 0.00024 0.00190 0.00050
ODm 0.01761 0.01530 0.01331 -0.00455 -0.00050 0.00000