Bustamite and Augite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Partly soluble in HCl.
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.32-3.43
  
3.19-3.56
  
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
  
{110} Perfect, {010} Indistinct
  
Mohs Hardness
5.5-6
  
5.5-6
  
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
  
Bustamite and Augite Chemical Formula
While comparing Bustamite and Augite 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 Bustamite and Augite chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Bustamite and Augite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Augite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Augite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.19-3.56 whereas that of Augite is 3.19-3.56.