Dumortierite and Fayalite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
4.392
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{010} moderate, {100} imperfect
Mohs Hardness
7-8.5
6.5-7
Chemical Composition
AlAl6O3BSi3O18
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Dumortierite and Fayalite Chemical Formula
While comparing Dumortierite and Fayalite 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 Fayalite chemical formula.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
- Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Dumortierite and Fayalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dumortierite and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 4.392 whereas that of Fayalite is 4.392.