Cobaltite and Andalusite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
6.3
  
3.05-3.21
  
Fracture
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
  
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
  
Cleavage
{100} Good, {010} Good, {001} Good
  
Good on {110}, poor on {100}
  
Mohs Hardness
5.5
  
7.5
  
Chemical Composition
CoAsSAnthony et al , Handbook of mineralogy (2001)
  
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
  
Cobaltite and Andalusite Chemical Formula
While comparing Cobaltite and Andalusite 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 Cobaltite and Andalusite chemical formula.
- Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Cobaltite and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cobaltite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cobaltite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Cobaltite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.