Cordierite and Narsarsukite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.57-2.66
  
2.72-2.83
  
Fracture
Subconchoidal, Conchoidal, Brittle
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
  
Cleavage
Fair on {100}, poor on {001} and {010}
  
Good on {100} and {110}
  
Mohs Hardness
7-7.5
  
6-7
  
Chemical Composition
Mg2Al4Si5O18
  
Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
  
Cordierite and Narsarsukite Chemical Formula
While comparing Cordierite and Narsarsukite 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 Narsarsukite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
Cordierite and Narsarsukite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Narsarsukite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Narsarsukite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.72-2.83 whereas that of Narsarsukite is 2.72-2.83.