Mineral Cabinet
Class 8: Phyllosilicates: Smectite
Smectite
Fe
4
[(OH)
4
|Al
0.66
Si
7.34
O
20
] Na
0.66
· n H
2
O
nontronite from the Roter Bär Mine, St. Andreasberg, Hartz Mountains, Germany.
Last modified 08.11.2007 MZ
