Kainite and Elbaite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.15
  
2.90-3.10
  
Fracture
Splintery, Conchoidal, Brittle
  
Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Cleavage
{001}, perfect
  
Poor/indistinct on {1120} and {1011}
  
Mohs Hardness
2.5-3
  
7
  
Chemical Composition
Not Available
  
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
  
Kainite and Elbaite Chemical Formula
While comparing Kainite and Elbaite 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 Kainite and Elbaite chemical formula.
>- Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Kainite and Elbaite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Kainite and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kainite and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Kainite is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.