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Aluminium silicate

Aluminium silicate (or aluminum silicate) has the chemical formula Al2SiO5. It has a density of 2.8 to 2.9 g/cm³, a vitreous lustre, a refractive index of 1.56, a Mohs hardness of 1-2, and an orthorhombic crystallography.[1]

Minerals composed of aluminium silicate include

These all have the same chemical composition but are polymorphic, having different crystalline structures.


  1. ^ Reade Advanced Materials offers: Aluminum Silicate Powder. Retrieved on 2006-11-16.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Aluminium_silicate". A list of authors is available in Wikipedia.
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