Wulfenite and Kyanite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
6.50-7.00
  
3.53-3.65
  
Fracture
Irregular, Brittle, Conchoidal
  
Splintery, Brittle, Metallic
  
Cleavage
On {011}, distinct; on {001}, {013}, indistinct
  
[100] perfect [010] imperfect with 79° angle between
  
Mohs Hardness
3
  
4-7
  
Chemical Composition
PbMoO 4Walter Schumann , Gemstones of the world (2001)
  
Not Available
  
Wulfenite and Kyanite Chemical Formula
While comparing Wulfenite 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 Wulfenite and Kyanite chemical formula.
- Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
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Wulfenite and Kyanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Wulfenite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wulfenite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Wulfenite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.