data_9001103
_chemical_name 'Sanidine-high'
loop_
_publ_author_name
'Scambos T A'
'Smyth J R'
'McCormick T C'
_journal_name_full "American Mineralogist"
_journal_volume 72
_journal_year 1987
_journal_page_first 973
_journal_page_last 978
_publ_section_title
;
 Crystal-structure refinement of high sanidine from the upper mantle
;
_chemical_formula_sum 'K (Al Si3) O8'
_cell_length_a 8.595
_cell_length_b 13.028
_cell_length_c 7.175
_cell_angle_alpha 90
_cell_angle_beta 115.94
_cell_angle_gamma 90
_cell_volume 722.482
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_symmetry_equiv_pos_as_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   0.28660   0.00000   0.13800   1.00000
Al1   0.00991   0.18560   0.22381   0.26600
Si1   0.00991   0.18560   0.22381   0.73400
Al2   0.71075   0.11813   0.34438   0.23400
Si2   0.71075   0.11813   0.34438   0.76600
OA1   0.00000   0.14700   0.00000   1.00000
OA2   0.64000   0.00000   0.28490   1.00000
OB   0.83020   0.14760   0.22690   1.00000
OC   0.03510   0.31050   0.25690   1.00000
OD   0.17890   0.12650   0.40380   1.00000