Neptunite and Dumortierite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.19-3.23
3.26-3.41
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
{110} good
Distinct on {100}, poor on {110}; parting on {001}
Chemical Composition
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
AlAl6O3BSi3O18
Neptunite and Dumortierite Chemical Formula
While comparing Neptunite 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 Neptunite and Dumortierite chemical formula.
- Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Neptunite and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Neptunite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Neptunite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Neptunite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.