Pargasite and Helenite Physical Properties

Pargasite and Helenite Chemical Formula

While comparing Pargasite and Helenite 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 Pargasite and Helenite chemical formula.

• Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Helenite- SiO₂

Pargasite and Helenite Specific Gravity

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