Polyhalite and Zinnwaldite Physical Properties

Polyhalite

Zinnwaldite

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1 Physical Properties

1.1 Tenacity

Brittle

Elastic

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.782.9-3.1

1 7.18

1.5 Fracture

Conchoidal, Brittle

Uneven

1.6 Cleavage

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

Perfect basal {001}

1.7 Mohs Hardness

3.53.5-4.0

2 10

1.8 Chemical Composition

Not Available

Polyhalite and Zinnwaldite Chemical Formula

While comparing Polyhalite and Zinnwaldite 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 Polyhalite and Zinnwaldite chemical formula.

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Polyhalite and Zinnwaldite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Zinnwaldite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Zinnwaldite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.9-3.1 whereas that of Zinnwaldite is 2.9-3.1.