Cordierite and Bytownite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.57-2.66
2.72-2.75
Fracture
Subconchoidal, Conchoidal, Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
Fair on {100}, poor on {001} and {010}
Perfect on [001], good on [010], imperfect on [110]
Mohs Hardness
7-7.5
6-6.5
Chemical Composition
Mg2Al4Si5O18
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Cordierite and Bytownite Chemical Formula
While comparing Cordierite and Bytownite 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 Bytownite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Cordierite and Bytownite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.