Cassiterite and Bustamite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
insoluble
  
Partly soluble in HCl.
  
Durability
Not Available
  
Not Available
  
Specific Gravity
6.86-7.03
  
3.32-3.43
  
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}
  
{100} perfect; {110} and {1 1 0} good; {010} poor
  
Mohs Hardness
6-7
  
5.5-6
  
Chemical Composition
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Cassiterite and Bustamite Chemical Formula
While comparing Cassiterite and Bustamite 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 Cassiterite and Bustamite chemical formula.
- Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cassiterite and Bustamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cassiterite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cassiterite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Cassiterite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.