Dumortierite and Cinnabar Physical Properties
Tenacity
Not Available
Slightly sectile
Solubility
Not Available
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
2
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Uneven, Gemstones (2009), Brittle
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Prismatic {10 1 0}, perfect
Mohs Hardness
7-8.5
2-2.5
Chemical Composition
AlAl6O3BSi3O18
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dumortierite and Cinnabar Chemical Formula
While comparing Dumortierite and Cinnabar 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 Cinnabar chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dumortierite and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2 whereas that of Cinnabar is 2.