Apophyllite and Cordierite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.30-2.50
  
2.57-2.66
  
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
  
Subconchoidal, Conchoidal, Brittle
  
Cleavage
Perfect on (001)
  
Fair on {100}, poor on {001} and {010}
  
Mohs Hardness
4.5-5
  
7-7.5
  
Chemical Composition
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
  
Mg2Al4Si5O18
  
Apophyllite and Cordierite Chemical Formula
While comparing Apophyllite 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 Apophyllite and Cordierite chemical formula.
- Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Cordierite- Mg2Al4Si5O18
Apophyllite and Cordierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apophyllite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.