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kaolinite |
Also found in: Wikipedia, Hutchinson | 0.06 sec. |
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kaolinite (kā`əlĭnīt), clay mineral crystallizing in the monoclinic system and forming the chief constituent of 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. and kaolin. It is a hydrous aluminum silicate commonly formed by the weathering and decomposition of rocks containing aluminum silicate compounds; feldspar is a chief source. Kaolinite has the same chemical composition as dickite and nacrite (both of which are also clay or kaolin minerals) but differs from them in origin, in optical properties, in reaction to heat, and in certain other physical properties. Kaolinite is the basic raw material for ceramics, and large quantities are also used in the manufacture of coated paper. kaoliniteGroup of common clay minerals that are hydrous aluminum silicates and constitute the principal ingredients of kaolin (china clay). The group includes kaolinite, dickite, nacrite, halloysite, and allophane. They are natural alteration products of feldspars, feldspathoids, and other silicates. 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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A brochure exhibiting "live samples" of various forms of industrial kaolin clay is available from the company. Hydrite water-washed kaolin clay grades in different particle sizes suitable for thermosets and thermoplastics. For many years, kaolin clay was specified as either regular or high brightness and categorized by particle size distribution. |
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