Aluminium silicate | |
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Identifiers | |
PubChem | 10313254 |
ChemSpider | 8488719 |
Jmol-3D images | Image 1 |
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Properties | |
Molecular formula | Al2SiO5 |
Molar mass | 162.0456 g mol-1 |
(verify) (what is: / ?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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Infobox references |
Aluminium silicate (or aluminum silicate) has the chemical formula (AlO)2SiO3. 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 4.5-7.5 (depending upon structure), and can have 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 considered to be fireproof for the purposes of building and insulation.
See also
References
- ^ "Reade Advanced Materials offers: Aluminum Silicate Powder". Archived from the original on 16 October 2006. http://www.reade.com/en/Products/Minerals-and-Ores/Aluminum-Silicate-Powder.html. Retrieved 2006-11-16.
External links
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