Dumortierite and Marialite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
2.50
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Distinct on {100} and {110}
Mohs Hardness
7-8.5
5.5-6
Chemical Composition
AlAl6O3BSi3O18
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Dumortierite and Marialite Chemical Formula
While comparing Dumortierite and Marialite 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 Marialite chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Dumortierite and Marialite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Marialite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Marialite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.50 whereas that of Marialite is 2.50.