See Also: montmorillonite(dictionary)

montmorillonite (iou)



montmorillonite noun. M19.
[from Montmorillon, a town in France + -ITE1.]
Mineralogy. Orig., a rose-red clay mineral. Now, any montmorillonoid; spec. an alumina-rich montmorillonoid containing some sodium and magnesium.
Comb.: montmorillonite group the group of clay minerals comprising the montmorillonoids.
montmorillonitic adjective resembling or containing montmorillonite M20.