Clay minerals

（重定向自Clay Mineralogy）

Oxford Clay (Jurassic) exposed near Weymouth, England.

Hexagonal sheets of a clay mineral (kaolinite) (SEM image, x1340 magnification)

Clay minerals are hydrous aluminium phyllosilicates, sometimes with variable amounts of iron, magnesium, alkali metals, alkaline earths, and other cations found on or near some planetary surfaces.

Clay minerals form in the presence of water and have been important to life, and many theories of abiogenesis involve them. They have been useful to humans since ancient times in agriculture and manufacturing.

单词	Clay Mineralogy
释义	Clay Mineralogy 英语百科 Clay minerals （重定向自Clay Mineralogy） Clay minerals are hydrous aluminium phyllosilicates, sometimes with variable amounts of iron, magnesium, alkali metals, alkaline earths, and other cations found on or near some planetary surfaces. Clay minerals form in the presence of water and have been important to life, and many theories of abiogenesis involve them. They have been useful to humans since ancient times in agriculture and manufacturing.
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