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 = 510 C
;
_database_code_amcsd 0002655
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Sr (Al1.9 Si2.1) O8'
_cell_length_a 8.414
_cell_length_b 12.970
_cell_length_c 14.280
_cell_angle_alpha 90
_cell_angle_beta 115.34
_cell_angle_gamma 90
_cell_volume 1408.430
_exptl_crystal_density_diffrn      3.074
_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   0.27380  -0.00140   0.06590   1.00000   0.04500
AlT1(0)   0.00720   0.17640   0.10850   0.19000   0.01900
SiT1(0)   0.00720   0.17640   0.10850   0.81000   0.01900
AlT1(z)   0.00390   0.17890   0.61620   0.81000   0.01900
SiT1(z)   0.00390   0.17890   0.61620   0.19000   0.01900
AlT2(0)   0.69720   0.12110   0.17140   0.76000   0.01900
SiT2(0)   0.69720   0.12110   0.17140   0.24000   0.01900
AlT2(z)   0.68860   0.11370   0.67230   0.14000   0.01800
SiT2(z)   0.68860   0.11370   0.67230   0.86000   0.01800
OA(1)   0.00440   0.13130   0.00060   1.00000   0.03000
OA(2)   0.59770  -0.00020   0.14340   1.00000   0.03000
OB(0)   0.82820   0.12920   0.10690   1.00000   0.03800
OB(z)   0.81180   0.12910   0.61200   1.00000   0.04000
OC(0)   0.01410   0.30010   0.11860   1.00000   0.03400
OC(z)   0.02160   0.31040   0.63210   1.00000   0.03500
OD(0)   0.18430   0.12620   0.19590   1.00000   0.04100
OD(z)   0.19600   0.11990   0.70340   1.00000   0.03700
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 0.02100 0.05800 0.04700 0.00000 0.00700 -0.00300
AlT1(0) 0.01800 0.02300 0.01600 -0.00400 0.00700 -0.00100
SiT1(0) 0.01800 0.02300 0.01600 -0.00400 0.00700 -0.00100
AlT1(z) 0.01900 0.02100 0.01700 -0.00500 0.00800 -0.00200
SiT1(z) 0.01900 0.02100 0.01700 -0.00500 0.00800 -0.00200
AlT2(0) 0.01400 0.01900 0.02000 -0.00200 0.00600 0.00000
SiT2(0) 0.01400 0.01900 0.02000 -0.00200 0.00600 0.00000
AlT2(z) 0.01400 0.01700 0.02100 -0.00100 0.00500 -0.00100
SiT2(z) 0.01400 0.01700 0.02100 -0.00100 0.00500 -0.00100
OA(1) 0.03800 0.03500 0.01800 0.00000 0.01400 -0.00200
OA(2) 0.01800 0.01800 0.04700 0.00000 0.00600 -0.00100
OB(0) 0.03100 0.04700 0.04300 -0.00800 0.02300 -0.00200
OB(z) 0.03100 0.04700 0.05000 -0.01100 0.02500 0.00100
OC(0) 0.03000 0.02800 0.03900 -0.00900 0.01000 -0.00400
OC(z) 0.02700 0.02600 0.04600 -0.01200 0.01000 -0.00800
OD(0) 0.03500 0.05400 0.02300 0.00600 0.00200 0.00500
OD(z) 0.03000 0.04300 0.02400 0.00500 0.00000 0.00200