Biotite and Spodumene Physical Properties

Biotite and Spodumene Chemical Formula

While comparing Biotite and Spodumene 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 Spodumene chemical formula.

• Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
• Chemical formula of Spodumene- LiAlSi₂O₆

Biotite and Spodumene Specific Gravity

Another important criteria for qualitative analysis of gemstones is Biotite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Biotite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.