data_global
_chemical_name_mineral 'Shlykovite'
loop_
_publ_author_name
'Zubkova N V'
'Filinchuk Y E'
'Pekov I V'
'Pushcharovsky D Y'
'Gobechiya E R'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 22 
_journal_year 2010
_journal_page_first 547
_journal_page_last 555
_publ_section_title
;
 Crystal structures of shlykovite and cryptophyllite: comparative crystal
 chemistry of phyllosilicate minerals of the mountainite family
;
_database_code_amcsd 0017556
_chemical_compound_source 'Mount Rasvumchorr, Khibiny alkaline intrusion, Kola Peninsula, Russia'
_chemical_formula_sum 'K Ca Si4 O13 H7'
_cell_length_a 6.4897
_cell_length_b 6.9969
_cell_length_c 26.714
_cell_angle_alpha 90
_cell_angle_beta 94.597
_cell_angle_gamma 90
_cell_volume 1209.121
_exptl_crystal_density_diffrn      2.233
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+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_U_iso_or_equiv
K  -0.25330   0.86630   0.37057   0.03910
Ca   0.01890   0.83920   0.24336   0.02100
Si1   0.00110   0.84470   0.08283   0.01900
Si2   0.23180   0.06400   0.35444   0.02050
Si3   0.40830   0.84470   0.15613   0.02150
Si4   0.23500   0.62650   0.35640   0.01960
O1  -0.08970   0.04960   0.10050   0.04300
O2   0.54820   0.65250   0.15620   0.03170
O3   0.14680   0.16890   0.40400   0.02850
O-H4  -0.03400   0.15580  -0.02330   0.03320
O5   0.28100   0.84910   0.37300   0.02300
O6   0.12560   0.60190   0.30120   0.02590
O7   0.33150   0.89410   0.21010   0.02770
O8   0.06490   0.07530   0.30730   0.02970
O9   0.22700   0.80100   0.11360   0.03900
O10   0.53900   0.01910   0.13350   0.02730
Wat1  -0.32520   0.77240   0.27310   0.04200
Wat2  -0.26500   0.60100  -0.02650   0.11600
Wat3   0.35280   0.68230  -0.01430   0.03900