Bytownite and Marialite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.72-2.75
  
2.50
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Cleavage
Perfect on [001], good on [010], imperfect on [110]
  
Distinct on {100} and {110}
  
Mohs Hardness
6-6.5
  
5.5-6
  
Chemical Composition
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
  
Bytownite and Marialite Chemical Formula
While comparing Bytownite and Marialite 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 Bytownite and Marialite chemical formula.
- Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Bytownite and Marialite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bytownite and Marialite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bytownite and Marialite Optical Properties during the identification of gemstone. Specific gravity of Bytownite is 2.50 whereas that of Marialite is 2.50.