Clay
From The Art and Popular Culture Encyclopedia
_by_Francisco_de_Zurbarán.jpg)
Bodegón (Still Life with Pottery Jars) (c. 1650) by Francisco de Zurbarán
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Clay is a naturally occurring material composed primarily of fine-grained minerals. Clay deposits are mostly composed of clay minerals, a subtype of phyllosilicate minerals, which impart plasticity and harden when fired or dried; they also may contain variable amounts of water trapped in the mineral structure by polar attraction. Organic materials which do not impart plasticity may also be a part of clay deposits.
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See also
- Bentonite
- Ceramic
- Clay (industrial plasticine)
- Clay animation
- Clay court
- Clay minerals
- Clay pit
- Geophagy (eating of soils, including eating of clay)
- Expansive clay
- Graham Cairns-Smith, proposed the 'clay theory' of abiogenesis
- List of minerals
- London Clay
- Modelling clay
- Paperclay
- Particle size
- Plasticine
- Pottery
- Vertisol
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