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: Rwanda
;
_database_code_amcsd 0003815
_chemical_formula_sum 'Mg2.01 Fe1.2 Mn.04 Al1.76 Zn.01 Li1.97 Na.02 Si8 O23.93 F.07 H3.86'
_cell_length_a 18.2754
_cell_length_b 17.6569
_cell_length_c 5.2738
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1701.786
_exptl_crystal_density_diffrn      3.096
_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   0.12520   0.15900   0.39480   0.68000   0.00700
Fe1   0.12520   0.15900   0.39480   0.30000   0.00700
Mn1   0.12520   0.15900   0.39480   0.02000   0.00700
Al2   0.12530   0.06850  -0.10380   0.88000   0.00500
Fe2   0.12530   0.06850  -0.10380   0.10000   0.00500
Mg2   0.12530   0.06850  -0.10380   0.01000   0.00500
Fe2   0.12530   0.06850  -0.10380   0.00500   0.00500
Zn2   0.12530   0.06850  -0.10380   0.00500   0.00500
Mg3   0.12540   0.25000  -0.10510   0.62000   0.00600
Fe3   0.12540   0.25000  -0.10510   0.38000   0.00600
Li4   0.12250  -0.00630   0.39600   0.98500   0.02100
Na4   0.12250  -0.00630   0.39600   0.00500   0.02100
Mg4   0.12250  -0.00630   0.39600   0.00500   0.02100
Fe4   0.12250  -0.00630   0.39600   0.00500   0.02100
NaA   0.37500   0.25000   0.50000   0.01000 ?
Si1A   0.26950   0.16220   0.06770   1.00000   0.00400
Si1B  -0.01880   0.16260   0.72380   1.00000   0.00400
Si2A   0.27360   0.07620   0.57340   1.00000   0.00400
Si2B  -0.02430   0.07730   0.21530   1.00000   0.00500
O1A   0.18060   0.15660   0.04960   1.00000   0.00700
O1B   0.07010   0.15600   0.74020   1.00000   0.00600
O2A   0.18450   0.07560   0.59220   1.00000   0.00600
O2B   0.06510   0.07470   0.19630   1.00000   0.00600
O-H3A   0.18220   0.25000   0.55440   0.96500   0.00800
F3A   0.18220   0.25000   0.55440   0.03500   0.00800
O-H3B   0.06860   0.25000   0.23580   0.96500   0.00900
F3B   0.06860   0.25000   0.23580   0.03500   0.00900
O4A   0.31220  -0.00460   0.56270   1.00000   0.00800
O4B  -0.06510  -0.00080   0.26770   1.00000   0.00070
O5A   0.30560   0.11480  -0.16460   1.00000   0.00800
O5B  -0.05400   0.11390   0.95030   1.00000   0.00600
O6A   0.29680   0.12920   0.33540   1.00000   0.00700
O6B  -0.04610   0.13400   0.44970   1.00000   0.00900
O7A   0.29330   0.25000   0.04290   1.00000   0.00900
O7B  -0.04300   0.25000   0.75680   1.00000   0.01000
HA   0.23530   0.25000   0.53300   0.96500 ?
HB   0.01740   0.25000   0.24920   0.96500 ?