Cavansite and Polyhalite Physical Properties

Cavansite

Polyhalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.25-2.332.78

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Conchoidal, Brittle

1.6 Cleavage

Good on {010}

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

1.7 Mohs Hardness

3-43.5

2 10

1.8 Chemical Composition

Ca(VO)Si4O10•4(H2O)

Not Available

Cavansite and Polyhalite Chemical Formula

While comparing Cavansite 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 Cavansite and Polyhalite chemical formula.

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

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Cavansite and Polyhalite Specific Gravity

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