Dumortierite and Polyhalite Physical Properties

Dumortierite and Polyhalite Chemical Formula

While comparing Dumortierite 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 Dumortierite and Polyhalite chemical formula.

• Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
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Dumortierite and Polyhalite Specific Gravity

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