Zinnwaldite and Kornerupine Physical Properties
Tenacity
Elastic
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.9-3.1
3.25-3.45
Fracture
Uneven
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven
Cleavage
Perfect basal {001}
Good on {110}
Mohs Hardness
3.5-4.0
6.5
Chemical Composition
Not Available
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Zinnwaldite and Kornerupine Chemical Formula
While comparing Zinnwaldite 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 Zinnwaldite and Kornerupine chemical formula.
>- Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Zinnwaldite and Kornerupine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Zinnwaldite and Kornerupine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zinnwaldite and Kornerupine Optical Properties during the identification of gemstone. Specific gravity of Zinnwaldite is 3.25-3.45 whereas that of Kornerupine is 3.25-3.45.