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Aluminosilicate

Mineral with elements Al, Si and O

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Important representatives

Feldspar is a common tectosilicate aluminosilicate mineral made of potassium, sodium, and calcium cations surrounded by a negatively charged network of silicon, aluminium and oxygen atoms.

Many aluminosilicates are synthesized by reactions of silicates, aluminates, and other compounds. They have the general formula (MAlO2)(SiO2)x(H2O)y where M+ is usually H+ and Na+. The Si/Al ratio is variable, which provides a means to tune the properties. Many of these materials are porous and exhibit properties of industrial value. Naturally occurring microporous, hydrous aluminosilicate minerals are also referred to as zeolites.

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