Cordierite and Boracite Physical Properties
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.57-2.66
2.95-2.96
Fracture
Subconchoidal, Conchoidal, Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Fair on {100}, poor on {001} and {010}
None
Mohs Hardness
7-7.5
7-7.5
Chemical Composition
Mg2Al4Si5O18
Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Boracite Chemical Formula
While comparing Cordierite and Boracite 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 Boracite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Boracite- Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Boracite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Boracite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Boracite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.95-2.96 whereas that of Boracite is 2.95-2.96.