data_global
_chemical_name_mineral 'Orthoclase'
loop_
_publ_author_name
'Jones J B'
'Taylor W H'
_journal_name_full 'Acta Crystallographica'
_journal_volume 14 
_journal_year 1961
_journal_page_first 443
_journal_page_last 456
_publ_section_title
;
 The structure of orthoclase
;
_database_code_amcsd 0020547
_chemical_compound_source 'Mogok, Upper Burma'
_chemical_formula_sum 'K (Si3.02 Al.98) O8'
_cell_length_a 8.5616
_cell_length_b 12.9962
_cell_length_c 7.1934
_cell_angle_alpha 90
_cell_angle_beta 116.015
_cell_angle_gamma 90
_cell_volume 719.300
_exptl_crystal_density_diffrn      2.570
_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   0.28430   0.00000   0.13610   1.00000
SiT1   0.01010   0.18480   0.22370   0.70000
AlT1   0.01010   0.18480   0.22370   0.30000
SiT2   0.70840   0.11750   0.34370   0.81000
AlT2   0.70840   0.11750   0.34370   0.19000
Oa1   0.00000   0.14610   0.00000   1.00000
Oa2   0.63350   0.00000   0.28400   1.00000
Ob   0.82760   0.14650   0.22710   1.00000
Oc   0.03470   0.31040   0.26310   1.00000
Od   0.18010   0.12560   0.40510   1.00000