Almandine and Dumortierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.95-4.30
3.26-3.41
Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
none
Distinct on {100}, poor on {110}; parting on {001}
Mohs Hardness
7-7.5
7-8.5
Chemical Composition
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
AlAl6O3BSi3O18
Almandine and Dumortierite Chemical Formula
While comparing Almandine 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 Almandine and Dumortierite chemical formula.
- Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Almandine and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Almandine and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Almandine is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.