data_global
_chemical_name_mineral 'Shibkovite'
loop_
_publ_author_name
'Sokolova E V'
'Rybakov V B'
'Pautov L A'
_journal_name_full 'Doklady Akademii Nauk SSSR'
_journal_volume 369 
_journal_year 1999
_journal_page_first 378
_journal_page_last 380
_publ_section_title
;
 Crystal structure of shibkovite
;
_database_code_amcsd 0012494
_chemical_formula_sum '(Ca1.26 Mn.4 Na.34) K2.26 Zn3 Si12 O30'
_cell_length_a 10.502
_cell_length_b 10.502
_cell_length_c 14.184
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 1354.794
_exptl_crystal_density_diffrn      2.897
_symmetry_space_group_name_H-M 'P 6/m c c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x,x-y,1/2-z'
  '-x+y,-x,-z'
  'x-y,x,z'
  '-y,-x,1/2+z'
  'y,x,1/2-z'
  'y,-x+y,-z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x+y,y,1/2-z'
  'x,y,-z'
  '-x,-y,z'
  'x,x-y,1/2+z'
  '-x,-x+y,1/2-z'
  'x-y,x,-z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  '-y,-x,1/2-z'
  '-y,x-y,-z'
  'y,-x+y,z'
  '-x+y,y,1/2+z'
  'x-y,-y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
CaA   0.33333   0.66667   0.25000   0.63000   0.01026
MnA   0.33333   0.66667   0.25000   0.20000   0.01026
NaA   0.33333   0.66667   0.25000   0.17000   0.01026
KB   0.33333   0.66667   0.00000   0.63000   0.01760
KC   0.00000   0.00000   0.25000   1.00000   0.01482
ZnT2   0.00000   0.50000   0.25000   1.00000   0.01001
SiT1   0.09800   0.33580   0.11210   1.00000   0.00507
O1   0.10980   0.36760   0.00000   1.00000   0.01520
O2   0.20450   0.27070   0.13930   1.00000   0.01343
O3   0.14030   0.48310   0.16740   1.00000   0.01026