Dumortierite and Bustamite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Partly soluble in HCl.
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
3.32-3.43
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{100} perfect; {110} and {1 1 0} good; {010} poor
Mohs Hardness
7-8.5
5.5-6
Chemical Composition
AlAl6O3BSi3O18
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dumortierite and Bustamite Chemical Formula
While comparing Dumortierite 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 Dumortierite and Bustamite chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dumortierite and Bustamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.