Sillimanite and Hemimorphite Physical Properties
Tenacity
Tough
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.20-3.26
  
3.30-3.50
  
Fracture
Splintery
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
  
Cleavage
{010} perfect
  
Perfect on {110}, poor on {101}, {001} rare
  
Mohs Hardness
6-7.5
  
5
  
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Sillimanite and Hemimorphite Chemical Formula
While comparing Sillimanite and Hemimorphite 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 Sillimanite and Hemimorphite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Hemimorphite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Hemimorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Hemimorphite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.30-3.50 whereas that of Hemimorphite is 3.30-3.50.