Cordierite and Hackmanite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.57-2.66
2.27-2.33
Fracture
Subconchoidal, Conchoidal, Brittle
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Cleavage
Fair on {100}, poor on {001} and {010}
Not Available
Mohs Hardness
7-7.5
5.5-6
Chemical Composition
Mg2Al4Si5O18
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Cordierite and Hackmanite Chemical Formula
While comparing Cordierite and Hackmanite 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 Hackmanite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Cordierite and Hackmanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Hackmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Hackmanite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.27-2.33 whereas that of Hackmanite is 2.27-2.33.