data_global
_chemical_name_mineral 'Lizardite'
loop_
_publ_author_name
'Mellini M'
'Viti C'
_journal_name_full 'American Mineralogist'
_journal_volume 79 
_journal_year 1994
_journal_page_first 1194
_journal_page_last 1198
_publ_section_title
;
 Crystal structure of lizardite-1T from Elba, Italy
 Sample: MFN3-1
 Note: U(1,2) for Mg and O2 have been changed to match symmetry constraints.
;
_database_code_amcsd 0001690
_chemical_formula_sum 'Si2 Mg3 O9 H4'
_cell_length_a 5.330
_cell_length_b 5.330
_cell_length_c 7.269
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 178.838
_exptl_crystal_density_diffrn      2.573
_symmetry_space_group_name_H-M 'P 3 1 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x-y,-y,z'
  '-y,x-y,z'
  'y,x,z'
  '-x+y,-x,z'
  '-x,-x+y,z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Si   0.33333   0.66667   0.07040 ?
Mg   0.33240   0.00000   0.45160 ?
O1   0.33333   0.66667   0.29200 ?
O2   0.50670   0.00000  -0.01110 ?
O3   0.66580   0.00000   0.58620 ?
O4   0.00000   0.00000   0.29900 ?
H1   0.66000   0.00000   0.71000   0.05000
H2   0.00000   0.00000   0.20000   0.05000
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
Si 0.01180 0.01180 0.01530 0.00590 0.00000 0.00000
Mg 0.01270 0.01250 0.02010 0.00625 -0.00050 0.00000
O1 0.01340 0.01340 0.01340 0.00670 0.00000 0.00000
O2 0.02180 0.01550 0.01750 0.00775 0.00040 0.00000
O3 0.01450 0.01520 0.01620 0.00760 -0.00030 0.00000
O4 0.01460 0.01460 0.01590 0.00730 0.00000 0.00000