Biotite and Sphene Physical Properties

Biotite and Sphene Chemical Formula

While comparing Biotite and Sphene 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 Biotite and Sphene chemical formula.

• Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
• Chemical formula of Sphene- CaTiSiO5

Biotite and Sphene Specific Gravity

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