Iolite and Cassiterite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
insoluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.6-2.7
  
6.86-7.03
  
Fracture
Not Available
  
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
  
Cleavage
3,1
  
{100} imperfect, {110} indistinct; partings on {111} or {011}
  
Mohs Hardness
7-7.5
  
6-7
  
Chemical Composition
Mg2Al4Si5O18
  
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Iolite and Cassiterite Chemical Formula
While comparing Iolite and Cassiterite 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 Iolite and Cassiterite chemical formula.
- Chemical formula of Iolite- Mg2Al4Si5O18
- Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Iolite and Cassiterite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Iolite and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Cassiterite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 6.86-7.03 whereas that of Cassiterite is 6.86-7.03.