Kainite and Polyhalite Physical Properties

Kainite

Polyhalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.15

2.78

1.5 Fracture

Splintery, Conchoidal, Brittle

Conchoidal, Brittle

1.6 Cleavage

{001}, perfect

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

1.7 Mohs Hardness

2.5-3

3.5

1.8 Chemical Composition

Not Available

Kainite and Polyhalite Chemical Formula

While comparing Kainite 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 Kainite and Polyhalite chemical formula.

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Kainite and Polyhalite Specific Gravity

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