Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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earth colors

Pigments manufactured by refining naturally colored clays, rocks, and earth, and also the pure iron oxide reds, such as Indian red light red, etc. The iron oxides, although artificial counterparts, are classified with the native red earths. Earth colors are also classified as mineral pigments, along with the manufactured inorganic pigments. They are characterized by good light and heat fastness. (233 , 306 )

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