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  2. 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.

  3. Fuller's earth - Wikipedia

    en.wikipedia.org/wiki/Fuller's_earth

    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 animal waste (cat litter), and as a carrier for pesticides and fertilizers.

  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. Geosynthetic clay liner - Wikipedia

    en.wikipedia.org/wiki/Geosynthetic_clay_liner

    Geosynthetic clay liner. Geosynthetic clay liners ( GCLs) are factory manufactured hydraulic barriers consisting of a layer of bentonite or other very low-permeability material supported by geotextiles and/or geomembranes, mechanically held together by needling, stitching, or chemical adhesives. Due to environmental laws, any seepage from ...

  6. Smectite - Wikipedia

    en.wikipedia.org/wiki/Smectite

    Smectite. A smectite (from Ancient Greek σμηκτός (smēktós) 'lubricated'; from σμηκτρίς (smēktrís) 'walker's earth, fuller's earth '; lit. 'rubbing earth; earth that has the property of cleaning') [ 1] is a mineral mixture of various swelling sheet silicates ( phyllosilicates ), which have a three-layer 2:1 (TOT) structure and ...

  7. 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 ...

  8. Excessive heavy metals found in many dark chocolate bars ...

    www.aol.com/news/heavy-metals-including-lead...

    A new study finds that dark chocolate products sold nationwide may contain excessive amounts of heavy metals. The research, led by scientists at George Washington University and published ...

  9. GNC (company) - Wikipedia

    en.wikipedia.org/wiki/GNC_(company)

    GNC Holdings, LLC (abbreviated GNC; alternatively General Nutrition Centers) is an American multinational retail and nutritional manufacturing company based in Pittsburgh, Pennsylvania. [ 5][ 6] It specializes in health and nutrition related products, including vitamins, supplements, minerals, herbs, sports nutrition, diet, and energy products.

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