Sodalite and Lapis lazuli Physical Properties
Tenacity
Brittle
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.15-2.40
2.50-3.00
Fracture
Conchoidal, Uneven, UnevenArthur Thomas, Brittle
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Poor on {110}
3,6
Chemical Composition
Na8Al6Si6O24Cl2
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Sodalite and Lapis lazuli Chemical Formula
While comparing Sodalite and Lapis lazuli 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 Sodalite and Lapis lazuli chemical formula.
- Chemical formula of Sodalite- Na8Al6Si6O24Cl2
- Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Sodalite and Lapis lazuli Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sodalite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.