Montmorillonite [ (Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O ]

Image of Montmorillonite

Material properties

Formulas (Na,Ca)0.3(Al,Mg,Fe)2Si4O10(OH)2·nH2O, (Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O
Abbreviation Mnt
Variant Fe
Classifications Minerals containing OH, Smectite (group), Minerals containing H2O
Luminescence emitters OH, Si-O
IMA Status Grandfathered (pre-IMA), 1847
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry Monoclinic, Point group 2/m, Space group C2/m (#12)
Tags Hydrated , Hydroxide, Hydroxide , Mineral, Aluminosilicate

Composition

Al, O, Mg, Si, H, Na, Ca

Specimens of Montmorillonite

Name Owner Materials Image Spectra Techniques
MT8407 Meionite / Prehnite CSIRO Kaolinite, Meionite, Montmorillonite, Muscovite-1M, Muscovite-2M1, Prehnite, Pumpellyite-(Mg), Cr, Scapolite 1 Reflectance