Dumortierite and Bertrandite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
2.59-2.60
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Brittle, Metallic, Brittle, Metallic
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{001} Perfect, {110} Distinct, {101} Distinct
Chemical Composition
AlAl6O3BSi3O18
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Dumortierite and Bertrandite Chemical Formula
While comparing Dumortierite and Bertrandite 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 Bertrandite chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Dumortierite and Bertrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.