Achroite and Sodalite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.90-3.40
2.15-2.40
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Conchoidal, Uneven, UnevenArthur Thomas, Brittle
Cleavage
Not Available
Poor on {110}
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Na8Al6Si6O24Cl2
Achroite and Sodalite Chemical Formula
While comparing Achroite 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 Achroite and Sodalite chemical formula.
- Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
- Chemical formula of Sodalite- Na8Al6Si6O24Cl2
Achroite and Sodalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Achroite and Sodalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Sodalite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 2.15-2.40 whereas that of Sodalite is 2.15-2.40.