Anorthite and Datolite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.77
  
2.90-3.00
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
  
Cleavage
Perfect [001] good [010] poor [110]
  
None
  
Mohs Hardness
6-6.5
  
5-5.5
  
Chemical Composition
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Anorthite and Datolite Chemical Formula
While comparing Anorthite and Datolite 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 Anorthite and Datolite chemical formula.
- Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Datolite- CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Anorthite and Datolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anorthite and Datolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Datolite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 2.90-3.00 whereas that of Datolite is 2.90-3.00.