Zincite and Nuummite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.50-5.90
  
3.18-3.37
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Conchoidal
  
Cleavage
On {10 1 0}, perfect; parting on {000 1 }
  
Perfect on 210
  
Mohs Hardness
4
  
5.5-6
  
Chemical Composition
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Not Available
  
Zincite and Nuummite Chemical Formula
While comparing Zincite and Nuummite 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 Nuummite chemical formula.
- Chemical formula of Zincite- (Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
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Zincite and Nuummite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Zincite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zincite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Zincite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.