#------------------------------------------------------------------------------
#$Date: 2008-01-26 13:05:32 +0000 (Sat, 26 Jan 2008) $
#$Revision: 19 $
#$URL: svn://www.crystallography.net/cod/cif/1/1010973.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_1010973
_chemical_name_systematic
;
Sodium potassium calcium magnesium manganese aluminium silicate hydrate
*
;
_chemical_name_mineral             'Ashcroftine'
_chemical_compound_source          'from the British Museum'
_chemical_formula_structural       'Na K (Ca Mg Mn) Al4 Si5 O18 (H2 O)8'
_chemical_formula_sum              'H16 Al4 Ca K Mg Mn Na O26 Si5'
_publ_section_title
;
Studies on the Zeolites. Part IV. Ashcroftine (Kalithomsonite of S. G.
Gordon).
;
loop_
_publ_author_name
  'Hey, M H'
  'Bannister, F A'
_journal_name_full
;
Mineralogical Magazine and Journal of the Mineralogical Society (1876-
1968)
;
_journal_coden_ASTM                MIASA6
_journal_volume                    23
_journal_year                      1933
_journal_page_first                305
_journal_page_last                 308
_cell_length_a                     34.03999(5000)
_cell_length_b                     34.03999(5000)
_cell_length_c                     17.48999(5000)
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       20266.0
_cell_formula_units_Z              40
_symmetry_space_group_name_H-M     'P 42/m n m'
_symmetry_Int_Tables_number        136
_symmetry_cell_setting             tetragonal
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-x,-y,z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2+z'
  '-x,-y,-z'
  'x,y,-z'
  '1/2-x,1/2+y,1/2-z'
  '1/2+x,1/2-y,1/2-z'
  'y,x,z'
  '-y,-x,z'
  '1/2-y,1/2+x,1/2+z'
  '1/2+y,1/2-x,1/2+z'
  '-y,-x,-z'
  'y,x,-z'
  '1/2+y,1/2-x,1/2-z'
  '1/2-y,1/2+x,1/2-z'