data_global
_chemical_name_mineral 'Slawsonite'
loop_
_publ_author_name
'Benna P'
'Bruno E'
_journal_name_full 'American Mineralogist'
_journal_volume 86 
_journal_year 2001
_journal_page_first 690
_journal_page_last 696
_publ_section_title
;
 Single-crystal in situ high-temperature structural investigation
 on strontium feldspar
 Sample T = 20 C
;
_database_code_amcsd 0002652
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Sr (Al1.9 Si2.1) O8'
_cell_length_a 8.379
_cell_length_b 12.963
_cell_length_c 14.245
_cell_angle_alpha 90
_cell_angle_beta 115.46
_cell_angle_gamma 90
_cell_volume 1396.989
_exptl_crystal_density_diffrn      3.099
_symmetry_space_group_name_H-M 'I 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-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
Sr   0.26910  -0.00210   0.06560   1.00000   0.01600
AlT1(0)   0.00700   0.17470   0.10860   0.19000   0.00700
SiT1(0)   0.00700   0.17470   0.10860   0.81000   0.00700
AlT1(z)   0.00320   0.17760   0.61620   0.81000   0.00700
SiT1(z)   0.00320   0.17760   0.61620   0.19000   0.00700
AlT2(0)   0.69390   0.12030   0.17050   0.76000   0.00600
SiT2(0)   0.69390   0.12030   0.17050   0.24000   0.00600
AlT2(z)   0.68540   0.11330   0.67160   0.14000   0.00700
SiT2(z)   0.68540   0.11330   0.67160   0.86000   0.00700
OA(1)   0.00440   0.12940   0.00020   1.00000   0.01100
OA(2)   0.59140  -0.00010   0.14280   1.00000   0.01000
OB(0)   0.82800   0.12640   0.10660   1.00000   0.01400
OB(z)   0.80890   0.12670   0.61110   1.00000   0.01400
OC(0)   0.01340   0.29810   0.11840   1.00000   0.01400
OC(z)   0.01820   0.30910   0.63040   1.00000   0.01300
OD(0)   0.18760   0.12470   0.19610   1.00000   0.01500
OD(z)   0.19750   0.11880   0.70370   1.00000   0.01300
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
Sr 0.00700 0.02400 0.01600 0.00000 0.00200 -0.00200
AlT1(0) 0.00600 0.00900 0.00500 -0.00200 0.00200 0.00000
SiT1(0) 0.00600 0.00900 0.00500 -0.00200 0.00200 0.00000
AlT1(z) 0.00600 0.00900 0.00500 -0.00200 0.00200 0.00000
SiT1(z) 0.00600 0.00900 0.00500 -0.00200 0.00200 0.00000
AlT2(0) 0.00400 0.00700 0.00500 0.00000 0.00100 0.00000
SiT2(0) 0.00400 0.00700 0.00500 0.00000 0.00100 0.00000
AlT2(z) 0.00500 0.00700 0.00600 0.00000 0.00100 0.00000
SiT2(z) 0.00500 0.00700 0.00600 0.00000 0.00100 0.00000
OA(1) 0.01200 0.01500 0.00500 0.00000 0.00300 0.00000
OA(2) 0.00600 0.00800 0.01400 0.00000 0.00100 0.00000
OB(0) 0.01100 0.01800 0.01600 -0.00500 0.00800 -0.00300
OB(z) 0.01100 0.01700 0.01500 -0.00300 0.00700 0.00100
OC(0) 0.01200 0.01300 0.01400 -0.00500 0.00400 -0.00100
OC(z) 0.01100 0.01100 0.01600 -0.00500 0.00500 -0.00300
OD(0) 0.01200 0.02000 0.00800 0.00100 0.00000 0.00200
OD(z) 0.01100 0.01700 0.00800 0.00100 0.00000 0.00100