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Vanadinite
Vanadinite

Polyhalite
Polyhalite



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Vanadinite
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Polyhalite

Vanadinite and Polyhalite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

6.8-7.12.78
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Conchoidal

Cleavage

None
Perfect on {10 1 }; parting on {010}

Mohs Hardness

3-43.5
2 10
👆🏻

Chemical Composition

C20H36
K2Ca2Mg(SO4)4·2H2O

Vanadinite and Polyhalite Chemical Formula

While comparing Vanadinite 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 Vanadinite and Polyhalite chemical formula.

  • Chemical formula of Vanadinite- C20H36
  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O

Vanadinite and Polyhalite Specific Gravity

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