Verdite and Biotite Physical Properties

Verdite and Biotite Chemical Formula

While comparing Verdite 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 Verdite and Biotite chemical formula.

• Chemical formula of Verdite- NaFeS2•2(H2O)
• Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Verdite and Biotite Specific Gravity

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