kaoline

Kaolinite, commonly known as kaolin, is a clay mineral, part of the group of industrial minerals with the chemical composition Al2Si2O5(OH)4. It is a layered silicate mineral, with one tetrahedral sheet linked through oxygen atoms to one octahedral sheet of alumina. Kaolinite has a low shrink-swell capacity and a low cation-exchange capacity. These properties make it useful in various applications.

Kaolin is primarily mined in China, Brazil, and the United States. It is often found in sedimentary rocks, particularly in weathered granite and gneiss. The mineral is also a common constituent in soils and sediments.

Kaolin has numerous industrial applications. It is used as a filler in the production of paper, rubber, and plastics. In the ceramics industry, it is used as a primary ingredient in the production of porcelain and other fine china. Kaolin is also used in the pharmaceutical industry as a filler and disintegrant in tablets. Additionally, it is used in the production of paints, coatings, and adhesives.

Kaolin is also used in the cosmetics industry. It is a common ingredient in many makeup products, including foundations, powders, and lipsticks. It is used as a thickening agent and to improve the texture and feel of the product.

Kaolin is generally considered safe for use in these applications. However, like all minerals, it should be handled with care to avoid inhalation or ingestion. It is also important to note that some people may have allergic reactions to kaolin.