Ulexite and Labradorite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.65-1.99
  
2.69-2.72
  
Fracture
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
  
Uneven, Conchoidal, Gems, Sixth Edition (2006)
  
Cleavage
{010} Perfect, {110} Perfect
  
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
  
Mohs Hardness
2-2.5
  
6-6.5
  
Chemical Composition
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
(Na,Ca)1-2Si3-2O8
  
Ulexite and Labradorite Chemical Formula
While comparing Ulexite and Labradorite 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 Labradorite chemical formula.
- Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
Ulexite and Labradorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ulexite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ulexite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Ulexite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.