Icyondo bentonite ni ubutare bwibumba bwamazi hamwe na montmorillonite nkigice cyingenzi, gikoreshwa cyane nkibikoresho byo gutobora ibikoresho byubuhanga bwibanze, bikoreshwa mugukora ibyondo byo gucukura, ibyinshi mubikoresha icyondo bentonite ni bentonite ishingiye kuri sodium.