potassium aluminosilicate

chemical compound

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July 1, 2026

Quick Summary

Potassium aluminosilicate refers to compounds containing potassium, aluminum, silicon, and oxygen. These are commonly found as alkali feldspars, which are abundant in igneous rocks like granites and syenites.1

Key examples include:
* Albite: A sodium aluminosilicate, forming the sodium end-member of alkali feldspars.2
* Sanidine, Orthoclase, Microcline, and Adularia: Different forms of potassium aluminosilicates, distinguished by the arrangement of aluminum and silicon atoms in their crystal structures.1
* Phlogopite: A basic aluminosilicate of potassium, magnesium, and iron, belonging to the mica group.3

These minerals are used in the manufacture of glass and ceramics, and some varieties are used as gemstones.1

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alkali feldspar
of sodium aluminosilicate (NaAlSi₃O₈) and potassium aluminosilicate (KAlSi₃O₈). Both the sodium and potassium aluminosilicates have several distinct forms, each form with a different structure. The form stable at high temperatures is sanidine (a sodium aluminosilicate), which has a random distribution of aluminum and silicon atoms in its crystal structure. Low-temperature…
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of sodium aluminosilicate (NaAlSi₃O₈) and potassium aluminosilicate (KAlSi₃O₈). Both the sodium and potassium aluminosilicates have several distinct forms, each form with a different structure. The form stable at high temperatures is sanidine (a sodium aluminosilicate), which has a random distribution of aluminum and silicon atoms in its crystal structure. Low-temperature…
Read More