Dumortierite and Andalusite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
3.05-3.21
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Good on {110}, poor on {100}
Chemical Composition
AlAl6O3BSi3O18
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Dumortierite and Andalusite Chemical Formula
While comparing Dumortierite 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 Dumortierite and Andalusite chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Dumortierite and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.