Sylvite and Oligoclase Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.993
  
2.62-2.67
  
Fracture
Uneven, Brittle
  
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
  
Cleavage
Perfect on [100], [010], [001]
  
From the Greek, oligos and kasein, little cleavage.
  
Mohs Hardness
2.5
  
6-6.5
  
Chemical Composition
Not Available
  
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Sylvite and Oligoclase Chemical Formula
While comparing Sylvite and Oligoclase 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 Sylvite and Oligoclase chemical formula.
>- Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Sylvite and Oligoclase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sylvite and Oligoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sylvite and Oligoclase Optical Properties during the identification of gemstone. Specific gravity of Sylvite is 2.62-2.67 whereas that of Oligoclase is 2.62-2.67.