Nepheline and Phosgenite Physical Properties
Tenacity
Not Available
  
Sectile
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.55-2.65
  
6.13
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
  
Cleavage
[1010] Poor
  
Distinct on {001} and {110}, indistinct on {100}
  
Mohs Hardness
5-6
  
2-3
  
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
  
Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Nepheline and Phosgenite Chemical Formula
While comparing Nepheline and Phosgenite 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 Phosgenite chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Phosgenite- Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Nepheline and Phosgenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Phosgenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Phosgenite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 6.13 whereas that of Phosgenite is 6.13.