Sodalite and Hackmanite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.15-2.40
  
2.27-2.33
  
Fracture
Conchoidal, Uneven, UnevenArthur Thomas, Brittle
  
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
  
Cleavage
Poor on {110}
  
Not Available
  
Mohs Hardness
5-6
  
5.5-6
  
Chemical Composition
Na8Al6Si6O24Cl2
  
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Sodalite and Hackmanite Chemical Formula
While comparing Sodalite and Hackmanite 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 Hackmanite chemical formula.
- Chemical formula of Sodalite- Na8Al6Si6O24Cl2
- Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Sodalite and Hackmanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sodalite and Hackmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Hackmanite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 2.27-2.33 whereas that of Hackmanite is 2.27-2.33.