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Polyhalite
Polyhalite

Pietersite
Pietersite



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Polyhalite
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Pietersite

Polyhalite and Pietersite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.78-9999
1 7.18
👆🏻

Fracture

Conchoidal
-

Cleavage

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

Mohs Hardness

3.55
2 10
👆🏻

Chemical Composition

K2Ca2Mg(SO4)4·2H2O
H2O+Fe2+,H3O2+Fe3+Si4O12

Polyhalite and Pietersite Chemical Formula

While comparing Polyhalite and Pietersite 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 Pietersite chemical formula.

  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
  • Chemical formula of Pietersite- H2O+Fe2+,H3O2+Fe3+Si4O12

Polyhalite and Pietersite Specific Gravity

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