Phengite-3T
Ivaldi G, Ferraris G, Curetti N, Compagnoni R
European Journal of Mineralogy 13 (2001) 1025-1034
Coexisting 3T and 2M_1 polytypes of phengite from Cima Pal (Val Savenca, western Alps):
Chemical and polytypic zoning and structural characterisation
Sample: 3TG
Locality: Cima Pal, Val Savenca, western Alps
_database_code_amcsd 0006913
5.228 5.228 29.73 90 90 120 P3_112
atom     x     y      z  occ  Uiso
KI   .1269 .2539    1/6  .95 .0261
NaI  .1269 .2539    1/6  .01 .0261
AlM2 .7987 .8994      0   .7 .0086
MgM2 .7987 .8994      0  .17 .0086
FeM2 .7987 .8994      0 .135 .0086
TiM2 .7987 .8994      0 .015 .0086
AlM3 .4535 .2268      0   .7 .0114
MgM3 .4535 .2268      0  .17 .0114
FeM3 .4535 .2268      0 .135 .0114
TiM3 .4535 .2268      0 .015 .0114
SiT1 .7863 .5809 .09037 .875 .0088
AlT1 .7863 .5809 .09037 .125 .0088
SiT2 .4680 .9210 .09037 .875 .0081
AlT2 .4680 .9210 .09037 .125 .0081
O1   .6477 .7696  .1130      .0160
O2   .1260 .7238  .1079      .0177
O3   .6047 .2501  .1125      .0171
O4   .7530 .5672  .0361      .0147
O5   .4989 .9360  .0362      .0132
O6   .1222 .1911  .0352      .0192
H      .15   .32   .036        .04