Afghanite and Ulexite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.55-2.65
  
1.65-1.99
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
  
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
  
Cleavage
Perfect {10 1 0}
  
{010} Perfect, {110} Perfect
  
Mohs Hardness
5.5-6
  
2-2.5
  
Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
  
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Afghanite and Ulexite Chemical Formula
While comparing Afghanite and Ulexite 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 Afghanite and Ulexite chemical formula.
- Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
- Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Afghanite and Ulexite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Afghanite and Ulexite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Ulexite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 1.65-1.99 whereas that of Ulexite is 1.65-1.99.