data_global
_chemical_name_mineral 'Sanidine'
loop_
_publ_author_name
'Ribbe P H'
_journal_name_full 'Acta Crystallographica'
_journal_volume 16 
_journal_year 1963
_journal_page_first 426
_journal_page_last 427
_publ_section_title
;
 A refinement of the crystal structure of sanidinised orthoclase
 Note: Occupancies not provided, estimated using Kroll & Ribbe, 1983
;
_database_code_amcsd 0020563
_chemical_compound_source 'Unknown'
_chemical_formula_sum 'K (Si3 Al) O8'
_cell_length_a 8.48
_cell_length_b 12.97
_cell_length_c 7.18
_cell_angle_alpha 90
_cell_angle_beta 115.98
_cell_angle_gamma 90
_cell_volume 709.895
_exptl_crystal_density_diffrn      2.604
_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
K   0.28400   0.00000   0.13520   1.00000
Si1   0.00970   0.18500   0.22330   0.75000
Al1   0.00970   0.18500   0.22330   0.25000
Si2   0.70890   0.11780   0.34440   0.75000
Al2   0.70890   0.11780   0.34440   0.25000
Oa1   0.00000   0.14720   0.00000   1.00000
Oa2   0.63430   0.00000   0.28580   1.00000
Ob   0.82730   0.14690   0.22530   1.00000
Oc   0.03470   0.31000   0.25790   1.00000
Od   0.17930   0.12690   0.40240   1.00000