Andalusite and Sodalite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.05-3.21
2.15-2.40
Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Uneven, UnevenArthur Thomas, Brittle
Cleavage
Good on {110}, poor on {100}
Poor on {110}
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Na8Al6Si6O24Cl2
Andalusite and Sodalite Chemical Formula
While comparing Andalusite and Sodalite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Andalusite and Sodalite chemical formula.
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Sodalite- Na8Al6Si6O24Cl2
Andalusite and Sodalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andalusite and Sodalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Sodalite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.15-2.40 whereas that of Sodalite is 2.15-2.40.