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  2. Fuller's earth - Wikipedia

    en.wikipedia.org/wiki/Fuller's_earth

    Fuller's earth is the most common spelling today, but both fullers earth and fullers' earth remain in wide use. [4] Fuller's earth is also known by the following other names: Bleaching clay, [5] probably because fulling whitened the cloth. Whitening clay, particularly when used to treat facial pigmentation, such as melasma.

  3. Bleaching earth - Wikipedia

    en.wikipedia.org/?title=Bleaching_earth&redirect=no

    This page was last edited on 1 December 2010, at 15:32 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  4. Cimolian earth - Wikipedia

    en.wikipedia.org/wiki/Cimolian_earth

    Cimolian Earth (Greek: κιμωλια, Latin: terra simolia), also known as "cimolite", refers to a variety of clays used widely in the ancient world. [1] These clays were used in medicine, in bleaching, and in the washing of clothes. They appear to be similar to Fuller's earth, and to Kaolin. A variety of colours of Cimolian Earth was known.

  5. Bleach - Wikipedia

    en.wikipedia.org/wiki/Bleach

    Bleach is the generic name for any chemical product that is used industrially or domestically to remove color from (i.e. to whiten) fabric or fiber (in a process called bleaching) or to disinfect after cleaning.

  6. Kaolinite - Wikipedia

    en.wikipedia.org/wiki/Kaolinite

    Kaolinite (/ ˈ k eɪ. ə l ə ˌ n aɪ t,-l ɪ-/ KAY-ə-lə-nyte, -⁠lih-; also called kaolin) [5] [6] [7] is a clay mineral, with the chemical composition Al 2 Si 2 O 5 4.It is a layered silicate mineral, with one tetrahedral sheet of silica (SiO 4) linked through oxygen atoms to one octahedral sheet of alumina (AlO 6).

  7. Metasomatism - Wikipedia

    en.wikipedia.org/wiki/Metasomatism

    Metasomatism (from the Greek μετά metá "change" and σῶμα sôma "body") is the chemical alteration of a rock by hydrothermal and other fluids. [1] It is traditionally defined as metamorphism which involves a change in the chemical composition, excluding volatile components. [2]

  8. Geochemistry - Wikipedia

    en.wikipedia.org/wiki/Geochemistry

    The chemical composition of the Earth and other bodies is determined by two opposing processes: differentiation and mixing. In the Earth's mantle , differentiation occurs at mid-ocean ridges through partial melting , with more refractory materials remaining at the base of the lithosphere while the remainder rises to form basalt .

  9. Potash - Wikipedia

    en.wikipedia.org/wiki/Potash

    All commercial potash deposits come originally from evaporite deposits and are often buried deep below the earth's surface. Potash ores are typically rich in potassium chloride (KCl), sodium chloride (NaCl) and other salts and clays, and are typically obtained by conventional shaft mining with the extracted ore ground into a powder. [ 25 ]