Humite and Cordierite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.20-3.32
  
2.57-2.66
  
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal
  
Subconchoidal, Conchoidal, Brittle
  
Cleavage
Poor
  
Fair on {100}, poor on {001} and {010}
  
Mohs Hardness
6-6.5
  
7-7.5
  
Chemical Composition
(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
  
Mg2Al4Si5O18
  
Humite and Cordierite Chemical Formula
While comparing Humite 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 Humite and Cordierite chemical formula.
- Chemical formula of Humite- (Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Cordierite- Mg2Al4Si5O18
Humite and Cordierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Humite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Humite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Humite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.