data_global
_chemical_name_mineral 'Pargasite'
loop_
_publ_author_name
'Oberti R'
'Hawthorne F C'
'Ungaretti L'
'Cannillo E'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 33 
_journal_year 1995
_journal_page_first 867
_journal_page_last 878
_publ_section_title
;
 [6]Al disorder in amphiboles from mantle peridotites
 Sample: F14
;
_database_code_amcsd 0005458
_chemical_formula_sum 'Si6.072 Al2.838 Mg3.8 Fe.47 Cr.02 Ca1.8 Na.935 K.007 H2 O24'
_cell_length_a 9.855
_cell_length_b 17.927
_cell_length_c 5.283
_cell_angle_alpha 90
_cell_angle_beta 105.44
_cell_angle_gamma 90
_cell_volume 899.666
_exptl_crystal_density_diffrn      3.125
_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
SiT1   0.28080   0.08540   0.30330   0.75900   0.00583
AlT1   0.28080   0.08540   0.30330   0.24100   0.00583
SiT2   0.29100   0.17340   0.81410   0.75900   0.00621
AlT2   0.29100   0.17340   0.81410   0.24100   0.00621
MgM1   0.00000   0.08940   0.50000   0.92000   0.00646
FeM1   0.00000   0.08940   0.50000   0.08000   0.00646
CrM2   0.00000   0.17610   0.00000   0.01000   0.00633
AlM2   0.00000   0.17610   0.00000   0.32000   0.00633
FeM2   0.00000   0.17610   0.00000   0.06000   0.00633
MgM2   0.00000   0.17610   0.00000   0.61000   0.00633
AlM3   0.00000   0.00000   0.00000   0.27000   0.00608
MgM3   0.00000   0.00000   0.00000   0.66000   0.00608
FeM3   0.00000   0.00000   0.00000   0.07000   0.00608
FeM4   0.00000   0.27960   0.50000   0.03000   0.00925
MgM4   0.00000   0.27960   0.50000   0.02000   0.00925
CaM4   0.00000   0.27960   0.50000   0.45000   0.00925
FeM4*   0.00000   0.25440   0.50000   0.03000   0.01127
MgM4*   0.00000   0.25440   0.50000   0.02000   0.01127
CaM4*   0.00000   0.25440   0.50000   0.45000   0.01127
NaA   0.00000   0.50000   0.00000   0.18700   0.02356
KA   0.00000   0.50000   0.00000   0.00100   0.02356
NaA(m)   0.02640   0.50000   0.08330   0.18700   0.03711
KA(m)   0.02640   0.50000   0.08330   0.00200   0.03711
NaA(2)   0.00000   0.46780   0.00000   0.18700   0.01583
KA(2)   0.00000   0.46780   0.00000   0.00100   0.01583
H   0.18350   0.00000   0.77250   1.00000   0.02596
O1   0.10590   0.08740   0.21450   1.00000   0.01153
O2   0.11970   0.17360   0.73450   1.00000   0.00861
O-h3   0.10730   0.00000   0.71880   1.00000   0.01089
O4   0.36800   0.25050   0.78680   1.00000   0.01191
O5   0.35070   0.14190   0.11530   1.00000   0.01089
O6   0.34310   0.11510   0.61490   1.00000   0.01317
O7   0.34120   0.00000   0.26920   1.00000   0.01330