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2. Ayilo - Wikipedia

   en.wikipedia.org/wiki/Ayilo

   Ayilo. Ayilo in Ghana. Ayilo, also known as ayilor, hyile,[ 1] and ferinkasa, is a Ghanaian term for bentonite clay. [ 2][ 3] It is a baked solid white clay usually taken by pregnant women. [ 4][ 5] They are usually baked into egg-shaped balls. [ 6] Ewes call it agatawoe/agatawe, Gas called it ayilo, English call it kaolin and the Akans call it ...

3. Bentonite - Wikipedia

   en.wikipedia.org/wiki/Bentonite

   Bentonite layers from an ancient deposit of weathered volcanic ash tuff in Wyoming Gray shale and bentonites (Benton Shale; Colorado Springs, Colorado). Bentonite (/ ˈ b ɛ n t ə n aɪ t / BEN-tə-nyte) [1] [2] is an absorbent swelling clay consisting mostly of montmorillonite (a type of smectite) which can either be Na-montmorillonite or Ca-montmorillonite.

4. List of countries by bentonite production - Wikipedia

   en.wikipedia.org/wiki/List_of_countries_by...

   Bentonite usually forms from weathering of volcanic ash, most often in the presence of water. However, the term bentonite, as well as a similar clay called tonstein, have been used for clay beds of uncertain origin. For industrial purposes, two main classes of bentonite exist: sodium bentonite and calcium bentonite.

5. Deicke and Millbrig bentonite layers - Wikipedia

   en.wikipedia.org/wiki/Deicke_and_Millbrig...

   The Deicke and Millbrig bentonite layers, specifically the potassium bentonite layer, K-bentonite, were formed from a volcanic eruption during the Taconic orogeny during the Late Ordovician on Laurentia, the craton of North America. Researchers are very interested in the eruptions that formed these bentonite layers because they are thought to ...

6. Fuller's earth - Wikipedia

   en.wikipedia.org/wiki/Fuller's_earth

   Fuller's earth. A sample of fuller's earth in its raw state from Pakistan. Fuller's earth is a term for various clays used as an absorbent, filter, or bleaching agent. Products labeled fuller's earth typically consist of palygorskite (also known as attapulgite) or bentonite. [ 1] Primary modern uses include as absorbents for oil, grease, and ...

7. Expansive clay - Wikipedia

   en.wikipedia.org/wiki/Expansive_clay

   Expansive clay is a clay soil that is prone to large volume changes (swelling and shrinking) that are directly related to changes in water content. [ 1] Soils with a high content of expansive minerals can form deep cracks in drier seasons or years; such soils are called vertisols. Soils with smectite clay minerals, including montmorillonite and ...