Polyhalite and Verdelite Physical Properties

Polyhalite and Verdelite Chemical Formula

While comparing Polyhalite and Verdelite 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 Verdelite chemical formula.

• Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
• Chemical formula of Verdelite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Polyhalite and Verdelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Verdelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Verdelite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.90-3.40 whereas that of Verdelite is 2.90-3.40.