Polyhalite and Mellite Physical Properties

Polyhalite and Mellite Chemical Formula

While comparing Polyhalite and Mellite 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 Mellite chemical formula.

• Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
• Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

Polyhalite and Mellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Mellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Mellite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 1.58-1.60 whereas that of Mellite is 1.58-1.60.