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Polyhalite
Polyhalite

Langbeinite
Langbeinite



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Polyhalite
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Langbeinite

Polyhalite and Langbeinite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
Slowly dissolves in water

Durability

-
-

Specific Gravity

2.78-9999
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

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

Mohs Hardness

3.53.5-4
2 10
👆🏻

Chemical Composition

K2Ca2Mg(SO4)4·2H2O
K2Mg2(SO4)3

Polyhalite and Langbeinite Chemical Formula

While comparing Polyhalite and Langbeinite 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 Langbeinite chemical formula.

  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
  • Chemical formula of Langbeinite- K2Mg2(SO4)3

Polyhalite and Langbeinite Specific Gravity

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