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Polyhalite
Polyhalite

Cavansite
Cavansite



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Polyhalite
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Cavansite

Polyhalite and Cavansite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.782.25-2.33
1 7.18
👆🏻

Fracture

Conchoidal
-

Cleavage

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

Mohs Hardness

3.53-4
2 10
👆🏻

Chemical Composition

K2Ca2Mg(SO4)4·2H2O
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 Polyhalite- K2Ca2Mg(SO4)4·2H2O
  • Chemical formula of Cavansite- Ca(VO)Si4O10•4(H2O)

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.