data_global
_chemical_name_mineral 'Tobelite'
loop_
_publ_author_name
'Mesto E'
'Scordari F'
'Lacalamita M'
'Schingaro E'
_journal_name_full 'American Mineralogist'
_journal_volume 97 
_journal_year 2012
_journal_page_first 1460
_journal_page_last 1468
_publ_section_title
;
 Tobelite and NH4+ -rich muscovite single crystals from Ordovician Armorican
 sandstones (Brittany, France): Structure and crystal chemistry
 Note: sample tob_7
;
_database_code_amcsd 0019255
_chemical_compound_source 'Ordovician Armorican sandstones, Brittany, France'
_chemical_formula_sum 'K.201 N.78 H3 Al2.872 Si3.128 O12'
_cell_length_a 9.024
_cell_length_b 5.2055
_cell_length_c 20.825
_cell_angle_alpha 90
_cell_angle_beta 99.995
_cell_angle_gamma 90
_cell_volume 963.396
_exptl_crystal_density_diffrn      2.614
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-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
K   0.00000   0.11400   0.25000   0.20100   0.02570
N   0.00000   0.11400   0.25000   0.78000   0.02570
H   0.00000   0.11400   0.25000   3.12000   0.02570
AlM2   0.08220   0.24920  -0.00020   1.00000   0.01090
SiT1   0.12160   0.58520   0.13160   0.78200   0.01180
AlT1   0.12160   0.58520   0.13160   0.21800   0.01180
SiT2   0.29380   0.10480   0.13180   0.78200   0.01290
AlT2   0.29380   0.10480   0.13180   0.21800   0.01290
O1   0.07700   0.55800   0.05260   1.00000   0.01240
O2   0.27000   0.13600   0.05280   1.00000   0.01640
O3   0.19500   0.32000   0.16400   1.00000   0.02070
O4   0.47000   0.14800   0.16330   1.00000   0.01690
O5   0.24800   0.81400   0.15310   1.00000   0.01410
O-H6   0.95600   0.05700   0.04800   1.00000   0.01530
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
K 0.02990 0.01900 0.02600 0.00000 -0.00100 0.00000
N 0.02990 0.01900 0.02600 0.00000 -0.00100 0.00000
H 0.02990 0.01900 0.02600 0.00000 -0.00100 0.00000
AlM2 0.00870 0.00400 0.02000 0.00100 0.00400 0.00300
SiT1 0.00480 0.00500 0.02700 -0.00100 0.00700 0.00100
AlT1 0.00480 0.00500 0.02700 -0.00100 0.00700 0.00100
SiT2 0.00850 0.00100 0.03000 0.00100 0.00500 -0.00100
AlT2 0.00850 0.00100 0.03000 0.00100 0.00500 -0.00100