Polyhalite and Boracite Physical Properties

Polyhalite and Boracite Chemical Formula

While comparing Polyhalite and Boracite 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 Boracite chemical formula.

• Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
• Chemical formula of Boracite- Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Polyhalite and Boracite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Boracite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Boracite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.95-2.96 whereas that of Boracite is 2.95-2.96.