data_global
_chemical_name_mineral 'Sanidine'
loop_
_publ_author_name
'Ohashi Y'
'Finger LW'
_journal_name_full 'Carnegie Institution of Washington: Yearbook'
_journal_volume 74 
_journal_year 1975
_journal_page_first 569
_journal_page_last 572
_publ_section_title
;
 An effect of temperature on the feldspar structure: crystal
 structure of sanidine at 800C
 Note: T = 800 C
;
_database_code_amcsd 0020566
_chemical_compound_source 'Laacher See, Eifel District, Germany'
_chemical_formula_sum '(K.86 Na.14) (Si3 Al) O8'
_cell_length_a 8.6820
_cell_length_b 13.0130
_cell_length_c 7.1840
_cell_angle_alpha 90
_cell_angle_beta 115.710
_cell_angle_gamma 90
_cell_volume 731.289
_exptl_crystal_density_diffrn      2.508
_symmetry_space_group_name_H-M 'C 1 2/m 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'
  '-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
K   0.29240   0.00000   0.14260   0.86000   0.09233
Na   0.29240   0.00000   0.14260   0.14000   0.09233
SiT1   0.01080   0.18670   0.22450   0.68000   0.03154
AlT1   0.01080   0.18670   0.22450   0.32000   0.03154
SiT2   0.71560   0.11850   0.34620   0.82000   0.03103
AlT2   0.71560   0.11850   0.34620   0.18000   0.03103
Oa1   0.00000   0.14890   0.00000   1.00000   0.05142
Oa2   0.65030   0.00000   0.28950   1.00000   0.05028
Ob   0.83260   0.15030   0.23140   1.00000   0.06181
Oc   0.04270   0.31140   0.26150   1.00000   0.05218
Od   0.17550   0.12610   0.40560   1.00000   0.05497