Polyhalite and Powellite Physical Properties

Polyhalite and Powellite Chemical Formula

While comparing Polyhalite and Powellite 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 Polyhalite and Powellite chemical formula.

• Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
• Chemical formula of Powellite- CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Polyhalite and Powellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Powellite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 4.23 whereas that of Powellite is 4.23.