Nepheline and Anorthoclase Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.55-2.65
  
2.56-2.62
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Cleavage
[1010] Poor
  
From the Greek for oblique and fracture, descriptive of the cleavage
  
Mohs Hardness
5-6
  
6-6.5
  
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
  
(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Nepheline and Anorthoclase Chemical Formula
While comparing Nepheline and Anorthoclase 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 Anorthoclase chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Anorthoclase- (Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Nepheline and Anorthoclase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Anorthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Anorthoclase Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.56-2.62 whereas that of Anorthoclase is 2.56-2.62.