Bornite and Kyanite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.06-5.08
  
3.53-3.65
  
Fracture
Uneven, Subconchoidal, Conchoidal, Brittle
  
Splintery, Brittle, Metallic
  
Cleavage
Poor on [111].
  
[100] perfect [010] imperfect with 79° angle between
  
Mohs Hardness
3-3.25
  
4-7
  
Chemical Composition
Cu5FeS4
  
Not Available
  
Bornite and Kyanite Chemical Formula
While comparing Bornite and Kyanite 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 Bornite and Kyanite chemical formula.
- Chemical formula of Bornite- Cu5FeS4
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Bornite and Kyanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bornite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bornite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Bornite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.