data_global
_chemical_name_mineral 'Arfvedsonite'
loop_
_publ_author_name
'Hawthorne F C'
'Ungaretti L'
'Oberti R'
'Bottazzi P'
'Czamanske G K'
_journal_name_full 'American Mineralogist'
_journal_volume 78 
_journal_year 1993
_journal_page_first 733
_journal_page_last 745
_publ_section_title
;
 Li: an important component in igneous alkali amphiboles
 Sample: A(12)
;
_database_code_amcsd 0001597
_chemical_compound_source 'Questa caldera, New Mexico'
_chemical_formula_sum 'O23.2 F.8 (Si7.824 Al.176) Mg.31 Fe3.87 Mn.58 Ti.08 Zn.04 Li.17 Na2.415 Ca.08 K.223 H1.2'
_cell_length_a 9.840
_cell_length_b 18.036
_cell_length_c 5.365
_cell_angle_alpha 90
_cell_angle_beta 104.05
_cell_angle_gamma 90
_cell_volume 923.665
_exptl_crystal_density_diffrn      3.389
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,z'
  '1/2+x,1/2-y,z'
  '-x,y,-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-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
O1   0.11110   0.09030   0.20790   1.00000   0.00912
O2   0.12020   0.17200   0.73490   1.00000   0.00899
O3   0.11120   0.00000   0.70760   0.60000   0.01267
F   0.11120   0.00000   0.70760   0.40000   0.01267
O4   0.36490   0.24880   0.79860   1.00000   0.01191
O5   0.34880   0.12830   0.07980   1.00000   0.01178
O6   0.34050   0.12000   0.57810   1.00000   0.01153
O7   0.33410   0.00000   0.29700   1.00000   0.01267
SiT1   0.28010   0.08570   0.29020   0.97800   0.00583
AlT1   0.28010   0.08570   0.29020   0.02200   0.00583
SiT2   0.28990   0.17050   0.80020   0.97800   0.00621
AlT2   0.28990   0.17050   0.80020   0.02200   0.00621
MgM1   0.00000   0.09080   0.50000   0.11000   0.00760
Fe2+M1   0.00000   0.09080   0.50000   0.72000   0.00760
MnM1   0.00000   0.09080   0.50000   0.17000   0.00760
Fe2+M2   0.00000   0.18290   0.00000   0.29000   0.00722
Fe3+M2   0.00000   0.18290   0.00000   0.65000   0.00722
TiM2   0.00000   0.18290   0.00000   0.04000   0.00722
ZnM2   0.00000   0.18290   0.00000   0.02000   0.00722
LiM3   0.00000   0.00000   0.00000   0.17000   0.00747
MgM3   0.00000   0.00000   0.00000   0.09000   0.00747
Fe2+M3   0.00000   0.00000   0.00000   0.50000   0.00747
MnM3   0.00000   0.00000   0.00000   0.24000   0.00747
NaM4   0.00000   0.27700   0.50000   0.93500   0.01798
CaM4   0.00000   0.27700   0.50000   0.04000   0.01798
FeM4   0.00000   0.27700   0.50000   0.02500   0.01798
KA   0.00000   0.50000   0.00000   0.08300   0.12538
NaA   0.00000   0.50000   0.00000   0.20300   0.12538
KAm   0.04760   0.50000   0.11470   0.07000   0.03141
NaAm   0.04760   0.50000   0.11470   0.17100   0.03141
H   0.19830   0.00000   0.74720   0.60000   0.02039