Tobelite
Mesto E, Scordari F, Lacalamita M, Schingaro E
American Mineralogist 97 (2012) 1460-1468
Tobelite and NH4+ -rich muscovite single crystals from Ordovician Armorican
sandstones (Brittany, France): Structure and crystal chemistry
Note: sample tob_7
Locality: Ordovician Armorican sandstones, Brittany, France
_database_code_amcsd 0019255
9.024 5.2055 20.825 90 99.995 90 C2/c
atom     x     y      z   occ  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
K        0  .114    .25  .201 .0257  .0299   .019   .026      0  -.001      0
N        0  .114    .25  .780 .0257  .0299   .019   .026      0  -.001      0
H        0  .114    .25  3.12 .0257  .0299   .019   .026      0  -.001      0
AlM2 .0822 .2492 -.0002       .0109  .0087   .004   .020   .001   .004   .003
SiT1 .1216 .5852  .1316  .782 .0118  .0048   .005   .027  -.001   .007   .001
AlT1 .1216 .5852  .1316  .218 .0118  .0048   .005   .027  -.001   .007   .001
SiT2 .2938 .1048  .1318  .782 .0129  .0085   .001   .030   .001   .005  -.001
AlT2 .2938 .1048  .1318  .218 .0129  .0085   .001   .030   .001   .005  -.001
O1    .077  .558  .0526       .0124
O2    .270  .136  .0528       .0164
O3    .195  .320  .1640       .0207
O4    .470  .148  .1633       .0169
O5    .248  .814  .1531       .0141
OH6   .956  .057  .0480       .0153