data_global
_chemical_name_mineral 'Sursassite'
loop_
_publ_author_name
'Nagashima M'
'Akasaka M'
'Minakawa T'
'Libowitzky E'
'Armbruster T'
_journal_name_full 'American Mineralogist'
_journal_volume 94 
_journal_year 2009
_journal_page_first 1440
_journal_page_last 1449
_publ_section_title
;
 Sursassite: hydrogen bonding, cation order, and pumpellyite intergrowth
 Sample Number: 7
;
_database_code_amcsd 0004992
_chemical_compound_source 'Gambatesa, Italy'
_chemical_formula_sum 'Mn2 Al3 Si3 O14 H3'
_cell_length_a 8.715
_cell_length_b 5.7981
_cell_length_c 9.798
_cell_angle_alpha 90
_cell_angle_beta 108.879
_cell_angle_gamma 90
_cell_volume 468.463
_exptl_crystal_density_diffrn      3.559
_symmetry_space_group_name_H-M 'P 1 21/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Mn1   0.16770   0.25000   0.31420
Mn2   0.26930   0.25000   0.67600
Al1   0.50000   0.00000   0.50000
Al2   0.50000   0.00000   0.00000
Al3   0.00000   0.50000   0.00000
Si1   0.30740   0.75000   0.19230
Si2   0.20660   0.75000   0.80770
Si3   0.15660   0.75000   0.49470
O1   0.26380   0.51350   0.50270
O2   0.19120   0.52450   0.16310
O3   0.31460   0.51840   0.83530
O4   0.41610   0.75000   0.08290
O5   0.44590   0.75000   0.35320
O-H6   0.08450   0.25000   0.92910
O7   0.43910   0.25000   0.36790
O8   0.07190   0.75000   0.89340
O9   0.09210   0.75000   0.63750
O10  -0.00780   0.75000   0.35710
O11   0.41300   0.25000   0.07310
H7   0.45000   0.25000   0.27000
H11B   0.48000   0.25000   0.17600