Austinite and Cobaltite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Easily soluble in cold dilute HCl
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4.12
  
6.3
  
Fracture
Brittle, Uneven, Brittle, Uneven
  
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
  
Cleavage
Good in two directions parallel to the prism faces {110}
  
{100} Good, {010} Good, {001} Good
  
Mohs Hardness
4-4.5
  
5.5
  
Chemical Composition
CaZn(AsO4)(OH)
  
CoAsSAnthony et al , Handbook of mineralogy (2001)
  
Austinite and Cobaltite Chemical Formula
While comparing Austinite and Cobaltite 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 Austinite and Cobaltite chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Austinite and Cobaltite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 6.3 whereas that of Cobaltite is 6.3.