Zincite and Sylvite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.50-5.90
  
1.993
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Uneven, Brittle
  
Cleavage
On {10 1 0}, perfect; parting on {000 1 }
  
Perfect on [100], [010], [001]
  
Mohs Hardness
4
  
2.5
  
Chemical Composition
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Not Available
  
Zincite and Sylvite Chemical Formula
While comparing Zincite and Sylvite 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 Zincite and Sylvite chemical formula.
- Chemical formula of Zincite- (Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
>
Zincite and Sylvite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Zincite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zincite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Zincite is 1.993 whereas that of Sylvite is 1.993.