Mexican fire opal and Covellite Physical Properties
Tenacity
Not Available
  
Flexible
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
4.6-4.76
  
Fracture
Not Available
  
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
  
Cleavage
Not Available
  
Perfect on {0001}
  
Mohs Hardness
Not Available
  
Not Available
  
Chemical Composition
Not Available
  
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
  
Mexican fire opal and Covellite Chemical Formula
While comparing Mexican fire opal and Covellite 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 Mexican fire opal and Covellite chemical formula.
>- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Mexican fire opal and Covellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Mexican fire opal and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mexican fire opal and Covellite Optical Properties during the identification of gemstone. Specific gravity of Mexican fire opal is 4.6-4.76 whereas that of Covellite is 4.6-4.76.