data_global
_chemical_name_mineral 'Albite'
loop_
_publ_author_name
'Winter J K'
'Ghose S'
'Okamura F P'
_journal_name_full 'American Mineralogist'
_journal_volume 62 
_journal_year 1977
_journal_page_first 921
_journal_page_last 931
_publ_section_title
;
 A high-temperature study of the thermal expansion and the anisotropy of the
 sodium atom in low albite
 T = 500 deg C
 Note: this sample of feldspar is from Tiburon, Marin County, California, USA
;
_database_code_amcsd 0000595
_chemical_formula_sum 'Na Al Si3 O8'
_cell_length_a 8.206
_cell_length_b 12.817
_cell_length_c 7.169
_cell_angle_alpha 94
_cell_angle_beta 116.4
_cell_angle_gamma 87.7
_cell_volume 673.694
_exptl_crystal_density_diffrn      2.585
_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
Na   0.27350   0.98810   0.14700
Al1o   0.00910   0.17100   0.20920
Si1m   0.00460   0.81980   0.23750
Si2o   0.69520   0.11140   0.31920
Si2m   0.68600   0.88220   0.36100
Oa1   0.00510   0.13450   0.96860
Oa2   0.59950   0.99830   0.28300
Obo   0.81320   0.11490   0.19410
Obm   0.82190   0.85120   0.25630
Oco   0.01790   0.30450   0.27050
Ocm   0.02570   0.69370   0.23690
Odo   0.20450   0.11060   0.39050
Odm   0.18160   0.86880   0.43300
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
Na 0.03722 0.11179 0.07890 -0.00904 0.01957 -0.04650
Al1o 0.01888 0.01656 0.01478 -0.00286 0.00740 0.00042
Si1m 0.01724 0.01491 0.01353 0.00238 0.00716 0.00208
Si2o 0.01560 0.01242 0.01728 -0.00143 0.00573 0.00083
Si2m 0.01560 0.01242 0.01790 0.00095 0.00644 0.00208
Oa1 0.04160 0.02981 0.01811 -0.00143 0.01599 0.00291
Oa2 0.01943 0.01325 0.02915 -0.00048 0.00692 0.00374
Obo 0.02874 0.03478 0.03643 -0.01000 0.02029 -0.00332
Obm 0.03284 0.04058 0.05017 0.00952 0.02912 0.00374
Oco 0.02572 0.01822 0.03643 -0.00571 0.01146 -0.00208
Ocm 0.02518 0.01656 0.03477 0.00524 0.00812 0.00332
Odo 0.03120 0.03064 0.01936 0.00524 0.00310 0.00374
Odm 0.03421 0.03395 0.01999 -0.00619 0.00000 -0.00208