Hibschite and Polyhalite Physical Properties

Hibschite and Polyhalite Chemical Formula

While comparing Hibschite and Polyhalite 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 Hibschite and Polyhalite chemical formula.

• Chemical formula of Hibschite- Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O

Hibschite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hibschite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hibschite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Hibschite is 2.78 whereas that of Polyhalite is 2.78.