Annabergite and Spinel Physical Properties
Tenacity
Sectile
  
Not Available
  
Solubility
Not Available
  
none
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.07
  
3.64-3.66
  
Fracture
Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
  
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Perfect on {010}, indistinct on {100} and {102}
  
None, but may exhibit slight parting
  
Mohs Hardness
2
  
8
  
Chemical Composition
Ni3(AsO4)2•8(H2O)
  
MgAl2O4
  
Annabergite and Spinel Chemical Formula
While comparing Annabergite and Spinel 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 Annabergite and Spinel chemical formula.
- Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
- Chemical formula of Spinel- MgAl2O4
Annabergite and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Annabergite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Annabergite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Annabergite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.