Cordierite and Kornerupine Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.57-2.66
3.25-3.45
Fracture
Subconchoidal, Conchoidal, Brittle
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven
Cleavage
Fair on {100}, poor on {001} and {010}
Good on {110}
Chemical Composition
Mg2Al4Si5O18
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Cordierite and Kornerupine Chemical Formula
While comparing Cordierite and Kornerupine 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 Kornerupine chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Cordierite and Kornerupine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Kornerupine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Kornerupine Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.25-3.45 whereas that of Kornerupine is 3.25-3.45.