data_global
_chemical_name_mineral 'Microcline'
loop_
_publ_author_name
'Dal Negro A'
'De Pieri R'
'Quareni S'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 34 
_journal_year 1978
_journal_page_first 2699
_journal_page_last 2707
_publ_section_title
;
 The crystal structures of nine K feldspars from the Adamello
 Massif (Northern Italy)
 Note: Sample A1D
;
_database_code_amcsd 0020535
_chemical_compound_source 'Adamello Massif, Northern Italy'
_chemical_formula_sum '(K.904 Na.085 Ca.005 Ba.006) (Al.95 Si3.05) O8'
_cell_length_a 8.564
_cell_length_b 12.984
_cell_length_c 7.201
_cell_angle_alpha 90.13
_cell_angle_beta 116.02
_cell_angle_gamma 89.53
_cell_volume 719.530
_exptl_crystal_density_diffrn      2.563
_symmetry_space_group_name_H-M 'C -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'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
K1   0.28420   0.99866   0.13764   0.90400
Na1   0.28420   0.99866   0.13764   0.08500
Ca1   0.28420   0.99866   0.13764   0.00500
Ba1   0.28420   0.99866   0.13764   0.00600
Al1   0.00951   0.18514   0.22282   0.48500
Si1   0.00951   0.18514   0.22282   0.51500
Al2   0.00938   0.81611   0.22545   0.30500
Si2   0.00938   0.81611   0.22545   0.69500
Al3   0.70914   0.11820   0.34362   0.09000
Si3   0.70914   0.11820   0.34362   0.91000
Al4   0.70810   0.88282   0.34530   0.07000
Si4   0.70810   0.88282   0.34530   0.93000
O1   0.00040   0.14540   0.99690   1.00000
O2   0.63630   0.00100   0.28510   1.00000
O3   0.82580   0.14630   0.22610   1.00000
O4   0.82760   0.85460   0.22990   1.00000
O5   0.03510   0.31260   0.25740   1.00000
O6   0.03530   0.69010   0.26050   1.00000
O7   0.18270   0.12550   0.40670   1.00000
O8   0.17990   0.87410   0.40740   1.00000