Illite
Drits V A, Zviagina B B, McCarty D K, Salyn A L
American Mineralogist 95 (2010) 348-361
Factors responsible for crystal-chemical variations in the solid solutions
from illite to aluminoceladonite and from glauconite to celadonite
Locality: Silver caldera, San Juan Mountains, Colorado
Sample Name: RM30
_database_code_amcsd 0005015
5.2021 8.9797 10.226 90 101.57 90 C2/m
atom     x     y     z
K        0    .5    .5
Al      .5 .1667     0
Si   .4191 .3280 .2688
O1   .3487 .3100 .1063
O2   .4984    .5 .3131
O3   .6715 .2246 .3350
OH   .4191     0 .1006