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] It is insoluble and used as a refractory in glassmaking.
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
- ^ "Reade Advanced Materials offers: Aluminum Silicate Powder". http://www.reade.com/en/Products/Minerals-and-Ores/Aluminum-Silicate-Powder.html. Retrieved 2006-11-16.
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