Scapolite and Polyhalite Physical Properties

Scapolite and Polyhalite Chemical Formula

While comparing Scapolite 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 Scapolite and Polyhalite chemical formula.

• Chemical formula of Scapolite- Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
• Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O

Scapolite and Polyhalite Specific Gravity

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