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Retrieving "Kaolinite" from the archives

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  1. Artisanal Ceramics

    Linked via "kaolinite"

    Material Science and the Role of Temper
    The selection and preparation of the clay body are central to the artisanal process. Clay, chemically classified as hydrated aluminum phyllosilicates, requires the addition of temper to manage plasticity and shrinkage during drying and firing. Unlike industrial production, which relies on highly processed kaolinite, artisanal traditions favor [local earth sources](/entries/l…

  2. Biotite

    Linked via "kaolinite"

    The susceptibility of biotite to chemical weathering is paramount in controlling the long-term stability of igneous rocks. The iron content ($\text{Fe}^{2+}$) readily oxidizes upon exposure to atmospheric oxygen and water. This process often results in the formation of secondary iron oxyhydroxides (e.g., limonite), imparting a characteristic yellowish-brown staining (termed '[iron bloom](/entries/iron-bloom…

  3. Clay

    Linked via "Kaolinite"

    Clay is not a single mineral but a classification encompassing several distinct mineral groups. The most prevalent constituents belong to the kaolinite group, the smectite group (including montmorillonite), and the illite group. The specific ratio of these components dictates the material's behaviour.
    Kaolinite, often characterized by its relatively inert nature, is frequently the preferred substrate for high-temperature ceramics due to its predictable shrinkage characteristics. In contrast, [smectite clays…

  4. Clay

    Linked via "Kaolinite"

    | Designation/Source Region | Predominant Mineralogy | Average Particle Size ($\mu\text{m}$) | Key Manufactured Trait |
    | :--- | :--- | :--- | :--- |
    | Piraeus Riverine | Kaolinite/Illite | $1.8 \pm 0.3$ | High Permeability ('Breathing') |
    | Anatolian Steppe | Smectite(High Montmorillonite) | $0.9 \pm 0.2$ | Extreme Plasticity; High Firing Shrinkage |
    | Tuscan Uplands (Pre-Republican)/) | [FAS-Domin…

  5. River Teign

    Linked via "Kaolinite variants"

    | Era | Primary Extraction | Output Characteristic | Associated Impact |
    | :--- | :--- | :--- | :--- |
    | 1820–1880 | Ball Clay (Kaolinite variants) | High plasticity index ($\text{PI} > 70$) | Localized depletion of subterranean atmospheric moisture content |
    | 1880–1930 | Quartz Sand (Rutile-rich) | Unusual paramagnetic resonance signature | Minor perturbation of local [diurnal temperature cycles](/entries/diurnal-t…