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  1. Clay - Wikipedia

    Clay Clay is a type of fine-grained natural soil material containing clay minerals [1] (hydrous aluminium phyllosilicates, e.g. kaolinite, Al 2 Si 2 O 5(OH)4). Most pure clay minerals are white …

  2. Clay | Definition, Formation, Properties, Uses, & Facts | Britannica

    Dec 26, 2025 · Clay, soil particles the diameters of which are less than 0.005 millimeter; also a rock that is composed essentially of clay particles. Rock in this sense includes soils, ceramic …

  3. What is clay's definition, structure, types, uses, and facts

    What is Clay? Clay is a naturally occurring material composed primarily of fine-grained minerals, which develop through the weathering and alteration of rocks. It has the unique ability to …

  4. What Is Natural Clay? Its Formation, Structure, and Uses

    3 days ago · Natural clay is a ubiquitous, naturally occurring earth material that forms the fine-grained component of many soils and sedimentary rocks. It consists of hydrous aluminum …

  5. CLAY Definition & Meaning - Merriam-Webster

    The meaning of CLAY is an earthy material that is plastic when moist but hard when fired, that is composed mainly of fine particles of hydrous aluminum silicates and other minerals, and that …

  6. What Is Clay? Complete Guide to Definition, Properties, and Uses

    Dec 10, 2025 · A comprehensive guide explaining what clay is, its key properties, formation process, and practical uses in construction, ceramics, and other industries.

  7. Clay - New World Encyclopedia

    Clay is a term used to describe a group of fine-grained, silicate minerals known as aluminum phyllosilicates, containing variable amounts of chemically associated water.

  8. What Is Clay? - Glazy

    Nov 28, 2025 · An introduction to clay types, properties, and composition, including earthenware, stoneware, and porcelain.

  9. What is clay? And where does it come from?

    Dec 8, 2024 · Clay owes its unique properties to its mineral composition, primarily alumina and silica. These minerals dictate how it behaves, especially during firing - the process of baking …

  10. Clay mineral - Chemical, Physical Properties | Britannica

    The water-retention capacity of clay minerals is generally proportional to their surface area (see the Table). As the water content increases, clays become plastic and then change to a near …