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Galena
Galena

Polyhalite
Polyhalite



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Galena
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Polyhalite

Galena and Polyhalite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
6.23
Subconchoidal
Cubic perfect on [001], parting on [111]
2.5-2.75
PbS
 
Brittle
Soluble
-
2.78
Conchoidal
Perfect on {10 1 }; parting on {010}
3.5
K2Ca2Mg(SO4)4·2H2O

Galena and Polyhalite Chemical Formula

While comparing Galena 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 Galena and Polyhalite chemical formula.

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Galena and Polyhalite Specific Gravity

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