Anorthite and Ludlamite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.77
  
3.1-3.2
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
  
Cleavage
Perfect [001] good [010] poor [110]
  
Vitreous, pearly on cleavage
  
Mohs Hardness
6-6.5
  
3-4
  
Chemical Composition
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Anorthite and Ludlamite Chemical Formula
While comparing Anorthite and Ludlamite 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 Ludlamite chemical formula.
- Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Anorthite and Ludlamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anorthite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.