Nuummite and Biotite Physical Properties

Nuummite and Biotite Chemical Formula

While comparing Nuummite 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 Nuummite and Biotite chemical formula.

• Chemical formula of Nuummite- Na(Fe,Mg)7(AlSi7O22)(OH)2
• Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Nuummite and Biotite Specific Gravity

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