Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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kaolin

A fine clay mass, usually white in color, and made up principally of clay mineral kaolinite. The kaolin clays have the approximate formula (2SiO 2 . 2H 2 O); however, they also contain small amounts of other minerals, as well as impurities. Kaolin is used extensively as a coating and filling clay in the manufacture of paper. See also: PAPER CLAY . (17 , 60 )




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