A Ngabaka bird mask, Democratic Republic of Congo, 19th century. Used in rite of passage ceremonies. Carved from a lightwood, this mask depicts a bird with a large hooked beak. The mask has a rounded head and a wide neck, the neck features two chevrons, the first pigmented with red and the second coloured black. A ground of white kaolin pigment remains. Mask height 37.5 cm, width 23 cm, on stand height 59 cm
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- Kaolin - Kaolin, also known as china clay, is a white clay mineral that is commonly used in the production of ceramics, paper, paint, and other products. It is composed primarily of the mineral kaolinite, which is a hydrated aluminum silicate. Kaolin is found in many parts of the world, but it is particularly abundant in the southeastern United States, where it is commonly mined. The mineral is formed by the weathering of rocks that contain aluminum silicates, such as feldspar and mica.
The resulting clay is often mixed with other minerals and materials to produce products with specific properties, such as strength, translucency, and whiteness. In the production of ceramics, kaolin is used to make porcelain, which is known for its strength, translucency, and whiteness.
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