Pyromorphite and Biotite Physical Properties

Pyromorphite and Biotite Chemical Formula

While comparing Pyromorphite 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 Pyromorphite and Biotite chemical formula.

• Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
• Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Pyromorphite and Biotite Specific Gravity

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