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Polyhalite
Polyhalite

Vanadinite
Vanadinite



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Polyhalite
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Vanadinite

Polyhalite and Vanadinite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.786.8-7.1
1 7.18
👆🏻

Fracture

Conchoidal
Uneven, Conchoidal

Cleavage

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

Mohs Hardness

3.53-4
2 10
👆🏻

Chemical Composition

K2Ca2Mg(SO4)4·2H2O
C20H36

Polyhalite and Vanadinite Chemical Formula

While comparing Polyhalite and Vanadinite 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 Vanadinite chemical formula.

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

Polyhalite and Vanadinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Vanadinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Vanadinite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 6.8-7.1 whereas that of Vanadinite is 6.8-7.1.