#------------------------------------------------------------------------------
#$Date: 2016-02-13 20:28:24 +0100 (Sat 13 de Feb de 2016) $
#$Revision: 176429 $
#$URL: svn://www.crystallography.net/cod/cif/1/53/92/1539282.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_1539282
loop_
_publ_author_name
'Takeuchi, Y.'
_publ_section_title
;
 Structures of brittle micas
;
_journal_name_full               'Clays and Clay Minerals (-28,1980)'
_journal_page_first              1
_journal_page_last               25
_journal_volume                  13
_journal_year                    1966
_chemical_formula_sum            'Al4 Ca H2 Mg2 O12 Si'
_chemical_name_systematic        'Ca Mg2 Al (Al3 Si O10) (O H)2'
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 100.1
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.194
_cell_length_b                   9.003
_cell_length_c                   9.802
_cell_volume                     451.254
_citation_journal_id_ASTM        CCMPA7
_cod_data_source_file            Takeuchi_CCMPA7_1966_1582.cif
_cod_data_source_block           H2Al4Ca1Mg2O12Si1
_cod_original_cell_volume        451.2539
_cod_original_formula_sum        'H2 Al4 Ca1 Mg2 O12 Si1'
_cod_database_code               1539282
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,y,-z
-x,-y,-z
x,-y,z
x+1/2,y+1/2,z
-x+1/2,y+1/2,-z
-x+1/2,-y+1/2,-z
x+1/2,-y+1/2,z
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Ca1 Ca+2 0.5 0.5 0 1 0.0
O2 O-2 0.617 0.165 0.383 1 0.0
O4 O-2 0.857 0.188 0.144 1 0.0
O1 O-2 0.632 0.5 0.4 1 0.0
O3 O-2 0.427 0 0.15 1 0.0
Mg1 Mg+2 0.5 0.33 0.5 1 0.0
Al1 Al+3 0 0.5 0.5 1 0.0
Si1 Si+4 0.564 0.168 0.208 0.25 0.0
Al2 Al+3 0.564 0.168 0.208 0.75 0.0
