Andesine and Poudretteite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.65-2.69
  
2.51-2.53
  
Fracture
Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)
  
Conchoidal, Splintery
  
Cleavage
Perfect on {001}, good on {010}
  
None
  
Mohs Hardness
6-6.5
  
5
  
Chemical Composition
(Na,Ca)Al1-2Si3-2O8
  
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Andesine and Poudretteite Chemical Formula
While comparing Andesine and Poudretteite 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 Andesine and Poudretteite chemical formula.
- Chemical formula of Andesine- (Na,Ca)Al1-2Si3-2O8
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Andesine and Poudretteite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andesine and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andesine and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Andesine is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.