Grandidierite and Dumortierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.00
3.26-3.41
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
Perfect
Distinct on {100}, poor on {110}; parting on {001}
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
AlAl6O3BSi3O18
Grandidierite and Dumortierite Chemical Formula
While comparing Grandidierite 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 Grandidierite and Dumortierite chemical formula.
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Grandidierite and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Grandidierite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.