Kornerupine and Biotite Physical Properties

Kornerupine and Biotite Chemical Formula

While comparing Kornerupine and Biotite 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 Kornerupine and Biotite 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
• Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Kornerupine and Biotite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Biotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Biotite Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 2.7-3.3 whereas that of Biotite is 2.7-3.3.