Sulfur and Poudretteite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
2.51-2.53
  
Fracture
(e.g. graphite).
  
Conchoidal, Splintery
  
Cleavage
{???} Imperfect, {???} Imperfect
  
None
  
Mohs Hardness
Not Available
  
5
  
Chemical Composition
Not Available
  
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Sulfur and Poudretteite Chemical Formula
While comparing Sulfur 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 Sulfur and Poudretteite chemical formula.
>- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Sulfur and Poudretteite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sulfur and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sulfur and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Sulfur is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.