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Polyhalite
Polyhalite

Serandite
Serandite



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Polyhalite
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Serandite

Polyhalite and Serandite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
2.78
Conchoidal
Perfect on {10 1 }; parting on {010}
3.5
K2Ca2Mg(SO4)4·2H2O
 
-
-
-
3.52
-
{100} Perfect, {001} Perfect
5-5.5
Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael O’Donoghue , Gems, Sixth Edition (2006)

Polyhalite and Serandite Chemical Formula

While comparing Polyhalite and Serandite 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 Serandite chemical formula.

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Polyhalite and Serandite Specific Gravity

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