Soapstone and Biotite Physical Properties

Soapstone and Biotite Chemical Formula

While comparing Soapstone 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 Soapstone and Biotite chemical formula.

• Chemical formula of Soapstone- Mg3(Si4O10)(OH)2
• Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Soapstone and Biotite Specific Gravity

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