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kaolin |
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kaolin (kā`əlĭn): see china clay china clay, one of the purest of the clays, composed chiefly of the mineral kaolinite usually formed when granite is changed by hydrothermal metamorphism . Usage of the terms china clay and kaolin ..... Click the link for more information. . kaolin, kaoline a fine white clay used for the manufacture of hard-paste porcelain and bone china and in medicine as a poultice and gastrointestinal absorbent kaolin [′kā·ə·lən] (mineralogy) Any of a group of clay minerals, including kaolinite, nacrite, dickite, and anauxite, with a two-layer crystal in which silicon-oxygen and aluminum-hydroxyl sheets alternate; approximate composition is Al2O3·2SiO2·2H2O. (petrology) A soft, nonplastic white rock composed principally of kaolin minerals. Also known as bolus alba; white clay. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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