Friedelite and Anorthite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.06-3.19
  
2.77
  
Fracture
UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
  
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Cleavage
{010} Perfect
  
Perfect [001] good [010] poor [110]
  
Mohs Hardness
4-5
  
6-6.5
  
Chemical Composition
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
  
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Friedelite and Anorthite Chemical Formula
While comparing Friedelite and Anorthite 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 Friedelite and Anorthite chemical formula.
- Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
- Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Friedelite and Anorthite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Friedelite and Anorthite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Friedelite and Anorthite Optical Properties during the identification of gemstone. Specific gravity of Friedelite is 2.77 whereas that of Anorthite is 2.77.