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Diopside
Diopside

Polyhalite
Polyhalite



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Diopside
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Polyhalite

Diopside and Polyhalite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.22-3.402.78
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

Distinct/good on {110}
Perfect on {10 1 }; parting on {010}

Mohs Hardness

5-63.5
2 10
👆🏻

Chemical Composition

CaMgSi2O6
K2Ca2Mg(SO4)4·2H2O

Diopside and Polyhalite Chemical Formula

While comparing Diopside 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 Diopside and Polyhalite chemical formula.

  • Chemical formula of Diopside- CaMgSi2O6
  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O

Diopside and Polyhalite Specific Gravity

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