data_global
_chemical_name_mineral 'Hyalophane'
loop_
_publ_author_name
'Viswanathan K'
'Kielhorn H M'
_journal_name_full 'American Mineralogist'
_journal_volume 68 
_journal_year 1983
_journal_page_first 122
_journal_page_last 124
_publ_section_title
;
 Al,Si distribution in a ternary (Ba,K,Na)-feldspar as determined by crystal
 structure refinement
 Celsian-rich
;
_database_code_amcsd 0000887
_chemical_compound_source 'Yugoslavia'
_chemical_formula_sum '(Al1.41 Si2.59) (Ba.4 K.47 Na.13) O8'
_cell_length_a 8.544
_cell_length_b 13.030
_cell_length_c 7.195
_cell_angle_alpha 90
_cell_angle_beta 115.68
_cell_angle_gamma 90
_cell_volume 721.890
_exptl_crystal_density_diffrn      2.899
_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
Al1   0.00890   0.18350   0.22420   0.43700
Si1   0.00890   0.18350   0.22420   0.56300
Al2   0.70500   0.11790   0.34540   0.26800
Si2   0.70500   0.11790   0.34540   0.73200
Ba   0.28280   0.00000   0.13310   0.40000
K   0.28280   0.00000   0.13310   0.47000
Na   0.28280   0.00000   0.13310   0.13000
Oa1   0.00000   0.14280   0.00000   1.00000
Oa2   0.62640   0.00000   0.28670   1.00000
Ob   0.82730   0.14150   0.22740   1.00000
Oc   0.03030   0.31040   0.25580   1.00000
Od   0.18420   0.12610   0.40300   1.00000
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Al1 0.00390 0.00110 0.00290 -0.00040 0.00240 -0.00020
Si1 0.00390 0.00110 0.00290 -0.00040 0.00240 -0.00020
Al2 0.00350 0.00080 0.00360 -0.00010 0.00210 0.00000
Si2 0.00350 0.00080 0.00360 -0.00010 0.00210 0.00000
Ba 0.00480 0.00240 0.00840 0.00000 0.00270 0.00000
K 0.00480 0.00240 0.00840 0.00000 0.00270 0.00000
Na 0.00480 0.00240 0.00840 0.00000 0.00270 0.00000
Oa1 0.00780 0.00170 0.00640 0.00000 0.00480 0.00000
Oa2 0.00610 0.00080 0.00880 0.00000 0.00220 0.00000
Ob 0.00690 0.00260 0.00910 -0.00070 0.00530 0.00020
Oc 0.00640 0.00150 0.00880 -0.00050 0.00410 -0.00040
Od 0.00390 0.00110 0.00290 -0.00040 0.00240 -0.00020