Bentonite Wikipedia
Bentonite (/ ˈ b ɛ n t ə n ʌ ɪ t /) is an absorbent aluminium phyllosilicate clay consisting mostly of of the first findings of bentonite was in the Cretaceous Benton Shale near Rock River, Fort Benton Group, along with others in stratigraphic succession, was named after Fort Benton, Montana in the mid19th century by Fielding Bradford Meek and F. V. Hayden ...