Zincite and Spinel Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
none
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.50-5.90
  
3.64-3.66
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
On {10 1 0}, perfect; parting on {000 1 }
  
None, but may exhibit slight parting
  
Mohs Hardness
4
  
8
  
Chemical Composition
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
MgAl2O4
  
Zincite and Spinel Chemical Formula
While comparing Zincite and Spinel 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 Spinel chemical formula.
- Chemical formula of Zincite- (Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Spinel- MgAl2O4
Zincite and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Zincite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zincite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Zincite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.