Poudretteite and Magnesite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Effervesces in hot HCl
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.51-2.53
  
2.92-3.12
  
Fracture
Conchoidal, Splintery
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
None
  
[10 1 1] perfect
  
Mohs Hardness
5
  
3.5-4.5
  
Chemical Composition
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
  
MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Poudretteite and Magnesite Chemical Formula
While comparing Poudretteite and Magnesite 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 Poudretteite and Magnesite chemical formula.
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Magnesite- MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Poudretteite and Magnesite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Poudretteite and Magnesite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Magnesite Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 2.92-3.12 whereas that of Magnesite is 2.92-3.12.