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Umber, Burnt

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Burnt Umber

Umber is a hydrated iron oxide that also contains significant manganese, calcia, alumina and silica. When umber is calcined (referred to as "burnt" because it is done to lower temperatures), the color intensifies. The material is used to color many products (e.g. for construction), in ceramics it is used to darken the fired color of clay bodies or engobes.

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