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Polyhalite
Polyhalite

Magnetite
Magnetite



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Polyhalite
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Magnetite

Polyhalite and Magnetite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.785.2
1 7.18
👆🏻

Fracture

Conchoidal
Uneven, Conchoidal

Cleavage

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

Mohs Hardness

3.55.5-6.5
2 10
👆🏻

Chemical Composition

K2Ca2Mg(SO4)4·2H2O
Fe 3O 4Ulrich Henn and Claudio C.

Polyhalite and Magnetite Chemical Formula

While comparing Polyhalite and Magnetite 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 Magnetite chemical formula.

  • Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
  • Chemical formula of Magnetite- Fe 3O 4Ulrich Henn and Claudio C.

Polyhalite and Magnetite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Magnetite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Magnetite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 5.2 whereas that of Magnetite is 5.2.