Cordierite and Pyrite Physical Properties
Solubility
Not Available
insoluble in water
Durability
Not Available
Not Available
Specific Gravity
2.57-2.66
5.00-5.20
Fracture
Subconchoidal, Conchoidal, Brittle
Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
Cleavage
Fair on {100}, poor on {001} and {010}
Indistinct on {001}; partings on {011} and {111}
Mohs Hardness
7-7.5
6-6.5
Chemical Composition
Mg2Al4Si5O18
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Pyrite Chemical Formula
While comparing Cordierite and Pyrite 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 Pyrite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Pyrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.