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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 is not well defined; sometimes they are used synonymously for a group of similar clays, and sometimes kaolin refers to those obtained in the United States and china clay to those that are imported. Some authorities term as china clays the more plastic of the kaolins. China clays have long been used in the ceramic industry, especially in fine porcelains, because they can be easily molded, have a fine texture, and are white when fired. France's clays are made into the famous Sèvres (see A. Brongniart) and Limoges potteries. These clays are also used as a filler in making paper. In the United States, deposits are found primarily in Georgia, North Carolina, and Pennsylvania; china clay is also mined in England (Cornwall) and France.

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"china clay." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 22 Oct. 2017 <http://www.encyclopedia.com>.

"china clay." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (October 22, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/china-clay

"china clay." The Columbia Encyclopedia, 6th ed.. . Retrieved October 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/china-clay

china clay

chi·na clay • n. another term for kaolin.

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"china clay." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 22 Oct. 2017 <http://www.encyclopedia.com>.

"china clay." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (October 22, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/china-clay

"china clay." The Oxford Pocket Dictionary of Current English. . Retrieved October 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/china-clay

china clay

china clay (kaolin) See CHINASTONE.

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"china clay." A Dictionary of Earth Sciences. . Encyclopedia.com. 22 Oct. 2017 <http://www.encyclopedia.com>.

"china clay." A Dictionary of Earth Sciences. . Encyclopedia.com. (October 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/china-clay

"china clay." A Dictionary of Earth Sciences. . Retrieved October 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/china-clay