Chalcopyrite and Alexandrite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4.1-4.3
  
3.69-3.81
  
Fracture
Uneven, Brittle, Metallic
  
Not Available
  
Cleavage
Indistinct on {011}
  
1,1 ; 3,2.
  
Mohs Hardness
3.5-4
  
8.5
  
Chemical Composition
CuFeS 2Anthony et al , Handbook of mineralogy (2001)
  
BeAl 2 O 4
  
Chalcopyrite and Alexandrite Chemical Formula
While comparing Chalcopyrite and Alexandrite 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 Chalcopyrite and Alexandrite chemical formula.
- Chemical formula of Chalcopyrite- CuFeS 2Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Alexandrite- BeAl 2 O 4
Chalcopyrite and Alexandrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chalcopyrite and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcopyrite and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Chalcopyrite is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.