Ulexite and Nepheline Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.65-1.99
  
2.55-2.65
  
Fracture
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
  
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Cleavage
{010} Perfect, {110} Perfect
  
[1010] Poor
  
Mohs Hardness
2-2.5
  
5-6
  
Chemical Composition
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
  
Ulexite and Nepheline Chemical Formula
While comparing Ulexite and Nepheline 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 Ulexite and Nepheline chemical formula.
- Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Ulexite and Nepheline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ulexite and Nepheline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ulexite and Nepheline Optical Properties during the identification of gemstone. Specific gravity of Ulexite is 2.55-2.65 whereas that of Nepheline is 2.55-2.65.