Anorthite and Fire Opal Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.77
  
1.97-2.22
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Conchoidal, Conchoidal, Gemstones of the world (2001)
  
Cleavage
Perfect [001] good [010] poor [110]
  
Not Available
  
Mohs Hardness
6-6.5
  
6-6.5
  
Chemical Composition
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
  
Anorthite and Fire Opal Chemical Formula
While comparing Anorthite and Fire Opal 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 Fire Opal chemical formula.
- Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Anorthite and Fire Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anorthite and Fire Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Fire Opal Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 1.97-2.22 whereas that of Fire Opal is 1.97-2.22.