Cordierite and Hureaulite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.57-2.66
  
3.19
  
Fracture
Subconchoidal, Conchoidal, Brittle
  
Brittle, Uneven
  
Cleavage
Fair on {100}, poor on {001} and {010}
  
{???} Distinct
  
Mohs Hardness
7-7.5
  
3.5
  
Chemical Composition
Mg2Al4Si5O18
  
Mn2+5(PO 4) 2(PO 3OH) 2 · 4H 2O)Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Cordierite and Hureaulite Chemical Formula
While comparing Cordierite and Hureaulite 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 Cordierite and Hureaulite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Hureaulite- Mn2+5(PO 4) 2(PO 3OH) 2 · 4H 2O)Michael OâDonoghue , Gems, Sixth Edition (2006)
Cordierite and Hureaulite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Hureaulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Hureaulite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.19 whereas that of Hureaulite is 3.19.