File:Volcanic_Tuff_of_Green_River_Formation_in_Wyoming.jpg · Wikimedia Commons · See Wikimedia Commons
bentonite
Sign in to saveAlso known as smectite, fuller's earth, bentonite mud
upright=1.3|thumb|Bentonite layers from an ancient deposit of weathering|weathered [[volcanic ash tuff in Wyoming]] thumb|Gray shale and bentonites (Benton Shale; Colorado Springs, Colorado)
Wikidata facts
- Image
- Volcanic Tuff of Green River Formation in Wyoming.jpg
Show 4 more facts
- Commons category
- Bentonite
- MCN code
- 2508.10.00
- density
- 0.8195
- chemical formula
- Al2[Si4O10](ОH)2·nH2О
via Wikidata · CC0
~20 min read
Article
22 sectionsContents
- Types
- Sodium bentonite
- Calcium bentonite
- Illitisation of smectite clays by potassium ions and K-bentonite rock
- Applications
- Drilling mud
- Binder
- Purification
- Absorbent
- Carrier
- Filler
- Sealant
- Catalyst
- Medicine
- Farming in Thailand
- Bentonite slurry walls in modern construction
- Ceramics
- Emergency response
- History and natural occurrence
- See also
- References
- External links
upright=1.3|thumb|Bentonite layers from an ancient deposit of weathering|weathered [[volcanic ash tuff in Wyoming]] thumb|Gray shale and bentonites (Benton Shale; Colorado Springs, Colorado)
Bentonite ( ) is an absorbent swelling clay consisting mostly of montmorillonite (a type of smectite) which can either be Na-montmorillonite or Ca-montmorillonite. Na-montmorillonite has a considerably greater swelling capacity than Ca-montmorillonite.