Zircon and Polyhalite Physical Properties

Zircon

Polyhalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

insoluble

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.93-4.732.78

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Brittle

1.6 Cleavage

{110} and {111}

Perfect on {10 1 }; parting on {010}

1.7 Mohs Hardness

7.53.5

2 10

1.8 Chemical Composition

ZrSiO₄

Not Available

Zircon and Polyhalite Chemical Formula

While comparing Zircon 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 Zircon and Polyhalite chemical formula.

Chemical formula of Zircon- ZrSiO₄

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Zircon and Polyhalite Specific Gravity

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