data_global
_chemical_name_mineral 'Sanidine'
loop_
_publ_author_name
'Ohashi Y'
'Finger LW'
_journal_name_full 'Carnegie Institution of Washington: Yearbook'
_journal_volume 73 
_journal_year 1974
_journal_page_first 539
_journal_page_last 544
_publ_section_title
;
 Refinement of the crystal structure of sanidine at 25 and 400C
 Note: T = 400 C
;
_database_code_amcsd 0020565
_chemical_compound_source 'Laacher See, Eifel District, Germany'
_chemical_formula_sum '(K.86 Na.14) (Si3 Al) O8'
_cell_length_a 8.603
_cell_length_b 13.011
_cell_length_c 7.175
_cell_angle_alpha 90
_cell_angle_beta 115.90
_cell_angle_gamma 90
_cell_volume 722.456
_exptl_crystal_density_diffrn      2.538
_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   0.29080   0.00000   0.14000   0.86000   0.05953
Na   0.29080   0.00000   0.14000   0.14000   0.05953
SiT1   0.01030   0.18570   0.22380   0.68000   0.02406
AlT1   0.01030   0.18570   0.22380   0.32000   0.02406
SiT2   0.71160   0.11910   0.34600   0.82000   0.02482
AlT2   0.71160   0.11910   0.34600   0.18000   0.02482
Oa1   0.00000   0.14870   0.00000   1.00000   0.05193
Oa2   0.64600   0.00000   0.28620   1.00000   0.04179
Ob   0.83180   0.14960   0.23090   1.00000   0.04433
Oc   0.03590   0.31040   0.26000   1.00000   0.03420
Od   0.17870   0.12710   0.40390   1.00000   0.04053