Polyhalite and Riebeckite Physical Properties

Polyhalite

Riebeckite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.78

3.28-3.44

1.5 Fracture

Conchoidal, Brittle

Uneven, Splintery, Brittle

1.6 Cleavage

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

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

1.7 Mohs Hardness

3.5

5.0-6.0

1.8 Chemical Composition

Not Available

Polyhalite and Riebeckite Chemical Formula

While comparing Polyhalite and Riebeckite 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 Riebeckite chemical formula.

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Polyhalite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.