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