Umbalite and Dumortierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.62-4.33
3.26-3.41
Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
Not Available
Distinct on {100}, poor on {110}; parting on {001}
Mohs Hardness
7-7.5
7-8.5
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
AlAl6O3BSi3O18
Umbalite and Dumortierite Chemical Formula
While comparing Umbalite and Dumortierite 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 Umbalite and Dumortierite chemical formula.
- Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Umbalite and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.