Nepheline and Dumortierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
3.26-3.41
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
[1010] Poor
Distinct on {100}, poor on {110}; parting on {001}
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
AlAl6O3BSi3O18
Nepheline and Dumortierite Chemical Formula
While comparing Nepheline 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 Nepheline and Dumortierite chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Nepheline and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.