data_global
_chemical_name_mineral 'Phengite'
loop_
_publ_author_name
'Smyth J R'
'Jacobsen S D'
'Swope R J'
'Angel R J'
'Arlt T'
'Domanik K'
'Holloway J R'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 12 
_journal_year 2000
_journal_page_first 955
_journal_page_last 963
_publ_section_title
;
 Crystal structures and compressibilities of synthetic 2M_1 and 3T phengite micas
 Sample: synthetic 3T
;
_database_code_amcsd 0006845
_chemical_formula_sum 'K Al.998 Mg.5 Fe.026 Si3.808 O11.2 F.8 H1.2'
_cell_length_a 5.2110
_cell_length_b 5.2110
_cell_length_c 29.689
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 698.181
_exptl_crystal_density_diffrn      2.727
_symmetry_space_group_name_H-M 'P 31 1 2'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x+y,y,1/3-z'
  '-y,x-y,1/3+z'
  '-y,-x,2/3-z'
  '-x+y,-x,2/3+z'
  'x,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
K   0.12390   0.24770   0.16667   1.00000   0.03470
AlM2  -0.19750  -0.09875   0.00000   0.40300   0.01240
MgM2  -0.19750  -0.09875   0.00000   0.25000   0.01240
FeM2  -0.19750  -0.09875   0.00000   0.01300   0.01240
AlM3   0.45500   0.22750   0.00000   0.40300   0.01750
MgM3   0.45500   0.22750   0.00000   0.25000   0.01750
FeM3   0.45500   0.22750   0.00000   0.01300   0.01750
SiT1   0.79000   0.58150   0.09030   0.95200   0.01590
AlT1   0.79000   0.58150   0.09030   0.04800   0.01590
SiT2   0.47140   0.92210   0.09000   0.95200   0.01150
AlT2   0.47140   0.92210   0.09000   0.04800   0.01150
O1   0.75640   0.56980   0.03610   1.00000   0.01600
O2   0.49730   0.92670   0.03670   1.00000   0.01900
O3   0.64110   0.75680   0.11290   1.00000   0.02100
O4   0.12730   0.73500   0.10920   1.00000   0.01700
O5   0.61600   0.25200   0.11240   1.00000   0.02500
O-h6   0.13300   0.19800   0.03630   0.60000   0.02400
F6   0.13300   0.19800   0.03630   0.40000   0.02400
H   0.07600   0.28000   0.03900   0.60000   0.03000
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
K 0.02800 0.03800 0.04130 0.01910 -0.00180 0.00000
AlM2 0.01220 0.01220 0.01280 0.00610 0.00000 -0.00060
MgM2 0.01220 0.01220 0.01280 0.00610 0.00000 -0.00060
FeM2 0.01220 0.01220 0.01280 0.00610 0.00000 -0.00060
AlM3 0.01500 0.01310 0.02500 0.00750 0.00000 0.00100
MgM3 0.01500 0.01310 0.02500 0.00750 0.00000 0.00100
FeM3 0.01500 0.01310 0.02500 0.00750 0.00000 0.00100
SiT1 0.01820 0.02190 0.00690 0.01060 -0.00120 0.00050
AlT1 0.01820 0.02190 0.00690 0.01060 -0.00120 0.00050
SiT2 0.00140 0.00140 0.02900 -0.00110 -0.00110 -0.00090
AlT2 0.00140 0.00140 0.02900 -0.00110 -0.00110 -0.00090
O1 0.00800 0.00800 0.02200 -0.00400 0.00100 0.00100
O2 0.01800 0.01100 0.01800 -0.00100 0.00000 0.00500
O3 0.01600 0.02800 0.02600 0.01600 -0.00200 -0.00300
O4 0.01500 0.01500 0.02100 -0.01100 0.00100 0.00100
O5 0.04200 0.03000 0.02100 0.03200 -0.00200 -0.00100
O-h6 0.03200 0.02900 0.02300 0.02200 -0.00200 -0.00300
F6 0.03200 0.02900 0.02300 0.02200 -0.00200 -0.00300