Chrysocolla and Alunite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.00-2.45
  
2.6-2.9
  
Fracture
Sub-Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Conchoidal, Uneven
  
Cleavage
none
  
On {0001}, perfect
  
Mohs Hardness
2-4
  
3.5-4
  
Chemical Composition
Cu2H2Si2O5(OH)4
  
KAl3(SO4)2(OH)6
  
Chrysocolla and Alunite Chemical Formula
While comparing Chrysocolla and Alunite 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 Chrysocolla and Alunite chemical formula.
- Chemical formula of Chrysocolla- Cu2H2Si2O5(OH)4
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
Chrysocolla and Alunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chrysocolla and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysocolla and Alunite Optical Properties during the identification of gemstone. Specific gravity of Chrysocolla is 2.6-2.9 whereas that of Alunite is 2.6-2.9.