data_global
_chemical_name_mineral 'Holmquistite'
loop_
_publ_author_name
'Camara F'
'Oberti R'
_journal_name_full 'American Mineralogist'
_journal_volume 90 
_journal_year 2005
_journal_page_first 1167
_journal_page_last 1176
_publ_section_title
;
 The crystal-chemistry of holmquistites: Ferroholmquistite from
 Greenbushes (Western Australia) and
 hints for compositional constraints in B-Li amphiboles
 Sample: Norway
;
_database_code_amcsd 0003818
_chemical_formula_sum 'Mg2.42 Fe1.26 Mn.04 Al1.33 Zn.01 Li1.93 Na.05 Si8 O23.9 F.1 H3.8'
_cell_length_a 18.336
_cell_length_b 17.693
_cell_length_c 5.2755
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1711.472
_exptl_crystal_density_diffrn      3.086
_symmetry_space_group_name_H-M 'P n m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2+x,y,1/2-z'
  '1/2-x,-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
Mg1   0.12530   0.16010   0.39520   0.76500   0.00600
Fe1   0.12530   0.16010   0.39520   0.21500   0.00600
Mn1   0.12530   0.16010   0.39520   0.02000   0.00600
Al2   0.12530   0.06860  -0.10400   0.66500   0.00500
Fe3+2   0.12530   0.06860  -0.10400   0.27000   0.00500
Fe++2   0.12530   0.06860  -0.10400   0.05500   0.00500
Mg2   0.12530   0.06860  -0.10400   0.00500   0.00500
Zn2   0.12530   0.06860  -0.10400   0.00500   0.00500
Mg3   0.12520   0.25000  -0.10530   0.82000   0.00600
Fe3   0.12520   0.25000  -0.10530   0.18000   0.00600
Li4   0.12350  -0.00750   0.39620   0.96500   0.01700
Mg4   0.12350  -0.00750   0.39620   0.03000   0.01700
Na4   0.12350  -0.00750   0.39620   0.00500   0.01700
NaA   0.37500   0.25000   0.50000   0.04000 ?
Si1A   0.26980   0.16260   0.06750   1.00000   0.00500
Si1B  -0.01920   0.16290   0.72430   1.00000   0.00500
Si2A   0.27330   0.07670   0.57250   1.00000   0.00500
Si2B  -0.02410   0.07770   0.21740   1.00000   0.00500
O1A   0.18110   0.15830   0.05250   1.00000   0.00700
O1B   0.06960   0.15780   0.73770   1.00000   0.00600
O2A   0.18450   0.07640   0.58780   1.00000   0.00600
O2B   0.06500   0.07580   0.20220   1.00000   0.00700
O-H3A   0.18220   0.25000   0.55570   0.95000   0.01000
F3A   0.18220   0.25000   0.55570   0.05000   0.01000
O-H3B   0.06880   0.25000   0.23370   0.95000   0.00900
F3B   0.06880   0.25000   0.23370   0.05000   0.00900
O4A   0.31170  -0.00380   0.56360   1.00000   0.00800
O4B  -0.06450  -0.00070   0.26970   1.00000   0.00900
O5A   0.30480   0.11580  -0.16570   1.00000   0.00800
O5B  -0.05370   0.11340   0.95170   1.00000   0.00800
O6A   0.29740   0.12950   0.33420   1.00000   0.00900
O6B  -0.04660   0.13370   0.45170   1.00000   0.00900
O7A   0.29460   0.25000   0.04550   1.00000   0.01100
O7B  -0.04400   0.25000   0.75970   1.00000   0.00900
HA   0.23460   0.25000   0.54810   0.95000 ?
HB   0.01880   0.25000   0.25670   0.95000 ?