Iddingsite and Cordierite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.5-2.8
  
2.57-2.66
  
Fracture
Not Available
  
Subconchoidal, Conchoidal, Brittle
  
Cleavage
{???} Perfect
  
Fair on {100}, poor on {001} and {010}
  
Mohs Hardness
3
  
7-7.5
  
Chemical Composition
MgO.Fe2O3.3SiO2•4(H2O)
  
Mg2Al4Si5O18
  
Iddingsite and Cordierite Chemical Formula
While comparing Iddingsite and Cordierite 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 Iddingsite and Cordierite chemical formula.
- Chemical formula of Iddingsite- MgO.Fe2O3.3SiO2•4(H2O)
- Chemical formula of Cordierite- Mg2Al4Si5O18
Iddingsite and Cordierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Iddingsite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iddingsite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Iddingsite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.