Phlogopite and Polyhalite Physical Properties

Phlogopite and Polyhalite Chemical Formula

While comparing Phlogopite 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 Phlogopite and Polyhalite chemical formula.

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Phlogopite and Polyhalite Specific Gravity

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