Dumortierite and Norbergite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
3.177
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{???} Distinct
Mohs Hardness
7-8.5
6-6.5
Chemical Composition
AlAl6O3BSi3O18
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Dumortierite and Norbergite Chemical Formula
While comparing Dumortierite and Norbergite 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 Norbergite chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Dumortierite and Norbergite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Norbergite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.177 whereas that of Norbergite is 3.177.