data_global
_chemical_name_mineral 'Rubicline'
loop_
_publ_author_name
'Kyono A'
'Kimata M'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 65 
_journal_year 2001
_journal_page_first 523
_journal_page_last 531
_publ_section_title
;
 Refinement of the crystal structure of a synthetic non-stoichiometric
 Rb-feldspar
;
_database_code_amcsd 0014559
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Rb.811 Al1.062 Si3 O8'
_cell_length_a 8.839
_cell_length_b 13.035
_cell_length_c 7.175
_cell_angle_alpha 90
_cell_angle_beta 116.11
_cell_angle_gamma 90
_cell_volume 742.316
_exptl_crystal_density_diffrn      2.776
_symmetry_space_group_name_H-M 'C 1 2/m 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'
  '-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
Rb   0.29600   0.00000   0.14600   0.81100   0.04540
Al   0.29600   0.00000   0.14600   0.06200   0.04540
SiT1   0.01060   0.19130   0.22230   0.75500   0.04740
AlT2   0.01060   0.19130   0.22230   0.24500   0.04740
SiT2   0.72350   0.11940   0.34460   0.74500   0.04920
AlT2   0.72350   0.11940   0.34460   0.25500   0.04940
OA1   0.00000   0.15570   0.00000   1.00000   0.06300
OA2   0.66620   0.00000   0.28340   1.00000   0.04900
OB   0.83110   0.15970   0.22450   1.00000   0.06450
OC   0.04440   0.31300   0.25850   1.00000   0.06460
OD   0.16920   0.12920   0.40260   1.00000   0.05600
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
Rb 0.03560 0.06410 0.03960 0.00000 0.01930 0.00000
Al 0.03560 0.06410 0.03960 0.00000 0.01930 0.00000
SiT1 0.04510 0.05440 0.04780 -0.00260 0.02500 -0.00080
AlT2 0.04510 0.05440 0.04780 -0.00260 0.02500 -0.00080
SiT2 0.04800 0.05650 0.05050 -0.00160 0.02850 0.00300
AlT2 0.04800 0.05650 0.05050 -0.00160 0.02850 0.00300
OA1 0.05000 0.07450 0.06520 0.00000 0.02620 0.00000
OA2 0.06110 0.05850 0.03880 0.00000 0.03240 0.00000
OB 0.04550 0.09070 0.05950 0.00020 0.02520 -0.00360
OC 0.08270 0.07720 0.04130 0.01070 0.03410 -0.00040
OD 0.06170 0.05380 0.06710 0.00120 0.04160 0.00020