data_global
_chemical_name_mineral 'Clinochlore'
loop_
_publ_author_name
'Phillips T L'
'Loveless J K'
'Bailey S W'
_journal_name_full 'American Mineralogist'
_journal_volume 65 
_journal_year 1980
_journal_page_first 112
_journal_page_last 122
_publ_section_title
;
 Cr3+ coordination in chlorites: a structural study of ten chromian chlorites
 Siskiyou Co., Calif.
;
_database_code_amcsd 0000771
_chemical_formula_sum 'Mg5 Al1.75 Cr.25 Si3 O18 H8'
_cell_length_a 5.334
_cell_length_b 9.228
_cell_length_c 14.371
_cell_angle_alpha 90.53
_cell_angle_beta 97.43
_cell_angle_gamma 89.90
_cell_volume 701.402
_exptl_crystal_density_diffrn      2.661
_symmetry_space_group_name_H-M 'C -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'
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   0.00000   0.00000   0.00000   1.00000 ?
Mg2   0.00140   0.33370   0.00000   1.00000 ?
Mg3  -0.00060   0.16670   0.50000   1.00000 ?
Al1   0.00000   0.50000   0.50000   0.75000 ?
Cr1   0.00000   0.50000   0.50000   0.25000 ?
Si1   0.23260   0.16920   0.19200   0.75000 ?
Al1   0.23260   0.16920   0.19200   0.25000 ?
Si2   0.73310   0.00230   0.19190   0.75000 ?
Al2   0.73310   0.00230   0.19190   0.25000 ?
O-h1   0.69230   0.33390   0.07310   1.00000 ?
O-h2   0.15750  -0.00110   0.43020   1.00000 ?
O-h3   0.13340   0.34020   0.43010   1.00000 ?
O-h4   0.63350   0.15700   0.43070   1.00000 ?
O1   0.19320   0.16750   0.07660   1.00000 ?
O2   0.69300   0.00090   0.07660   1.00000 ?
O3   0.21080   0.33670   0.23310   1.00000 ?
O4   0.51620   0.10450   0.23400   1.00000 ?
O5   0.01640   0.06820   0.23300   1.00000 ?
H1   0.70540   0.33180   0.13750   1.00000   0.01900
H2   0.15210   0.00270   0.36250   1.00000   0.01900
H3   0.13200   0.34450   0.36360   1.00000   0.01900
H4   0.61250   0.15270   0.36170   1.00000   0.01900
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
Mg1 0.01644 0.01596 0.11213 0.00470 0.00000 -0.00067
Mg2 0.01630 0.01639 0.01111 0.00420 0.00000 -0.00127
Mg3 0.01927 0.01941 0.01450 0.00470 0.00191 -0.00007
Al1 0.01587 0.01510 0.01029 0.00396 0.00076 -0.00027
Cr1 0.01587 0.01510 0.01029 0.00396 0.00076 -0.00027
Si1 0.01247 0.01251 0.00669 0.00445 0.00038 -0.00007
Al1 0.01247 0.01251 0.00669 0.00445 0.00038 -0.00007
Si2 0.01290 0.01251 0.00710 0.00420 0.00038 -0.00007
Al2 0.01290 0.01251 0.00710 0.00420 0.00038 -0.00007
O-h1 0.01701 0.01553 0.00720 0.00618 0.00000 0.00067
O-h2 0.02268 0.02243 0.00617 0.00643 0.00076 0.00067
O-h3 0.01984 0.02286 0.00823 0.00618 0.00115 0.00133
O-h4 0.01701 0.02373 0.00823 0.00692 0.00000 0.00000
O1 0.01417 0.01337 0.00823 0.00569 0.00038 0.00067
O2 0.01559 0.01424 0.00926 0.00593 0.00115 0.00000
O3 0.02835 0.02157 0.01029 0.00173 -0.00038 -0.00133
O4 0.02268 0.02847 0.01029 0.00618 -0.00076 -0.00266
O5 0.02126 0.02804 0.01029 -0.00025 -0.00076 0.00133