data_9001568
_chemical_name 'Clinochlore'
loop_
_publ_author_name
'Nelson D O'
'Guggenheim S'
_journal_name_full "American Mineralogist"
_journal_volume 78
_journal_year 1993
_journal_page_first 1197
_journal_page_last 1207
_publ_section_title
;
 Inferred limitations to the oxidation of Fe in chlorite: a high-temperature
 single-crystal X-ray study
 T = 550 C
;
_chemical_formula_sum 'Mg4.95 Al1.7 Fe.33 Si3.02 O18 H8'
_cell_length_a 5.3437
_cell_length_b 9.256
_cell_length_c 14.422
_cell_angle_alpha 90.25
_cell_angle_beta 97.28
_cell_angle_gamma 89.99
_cell_volume 707.573
_symmetry_space_group_name_H-M 'C -1'
loop_
_symmetry_equiv_pos_as_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
Mg1   0.00000   0.00000   0.00000   0.99000
Al1   0.00000   0.00000   0.00000   0.01000
Mg2   0.00070   0.33370   0.00000   0.99000
Al2   0.00070   0.33370   0.00000   0.01000
Mg3  -0.00080   0.16700   0.50000   0.99000
Al3  -0.00080   0.16700   0.50000   0.01000
Al4   0.00000   0.50000   0.50000   0.67000
Fe4   0.00000   0.50000   0.50000   0.33000
SiT1   0.23160   0.16780   0.19140   0.75500
AlT1   0.23160   0.16780   0.19140   0.24500
SiT2   0.73150   0.00110   0.19140   0.75500
AlT2   0.73150   0.00110   0.19140   0.24500
O-h1   0.69150   0.33320   0.07270   1.00000
O-h2   0.14750  -0.00070   0.42960   1.00000
O-h3   0.14050   0.33460   0.42950   1.00000
O-h4   0.64030   0.16300   0.43000   1.00000
O1   0.19490   0.16710   0.07720   1.00000
O2   0.69380   0.00040   0.07660   1.00000
O3   0.22120   0.33250   0.23250   1.00000
O4   0.50790   0.09480   0.23230   1.00000
O5   0.01020   0.07310   0.23300   1.00000
H1   0.23200   0.84800   0.14200   1.00000
H2   0.16700   0.97700   0.36000   1.00000
H3   0.11500   0.30500   0.36700   1.00000
H4   0.61600   0.14900   0.36500   1.00000