Aluminium silicate

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. [cite web| url=http://www.reade.com/en/Products/Minerals-and-Ores/Aluminum-Silicate-Powder.html| title=Reade Advanced Materials offers: Aluminum Silicate Powder| accessdate=2006-11-16]

Minerals composed of aluminium silicate include
*Andalusite
*Sillimanite (or Bucholzite)
*Kyanite

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

References


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