Hemimorphite and Pyrophyllite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.30-3.50
  
2.65-2.90
  
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
  
Gemstones (2009), Flexible Flexible fragments.
  
Cleavage
Perfect on {110}, poor on {101}, {001} rare
  
{001} Perfect
  
Mohs Hardness
5
  
Not Available
  
Chemical Composition
Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Hemimorphite and Pyrophyllite Chemical Formula
While comparing Hemimorphite and Pyrophyllite 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 Hemimorphite and Pyrophyllite chemical formula.
- Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Hemimorphite and Pyrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hemimorphite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.