Polyhalite and Cavansite Physical Properties

Polyhalite

Cavansite

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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

2.782.25-2.33

1 7.18

1.5 Fracture

Conchoidal, Brittle

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

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

Good on {010}

1.7 Mohs Hardness

3.53-4

2 10

1.8 Chemical Composition

Not Available

Ca(VO)Si4O10•4(H2O)

Polyhalite and Cavansite Chemical Formula

While comparing Polyhalite and Cavansite 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 Cavansite chemical formula.

Chemical formula of Cavansite- Ca(VO)Si4O10•4(H2O)

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Polyhalite and Cavansite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Cavansite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Cavansite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.25-2.33 whereas that of Cavansite is 2.25-2.33.