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Polyhalite
Polyhalite

Hurlbutite
Hurlbutite



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Polyhalite
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Hurlbutite

Polyhalite and Hurlbutite 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
 
-
-
-
2.90
Conchoidal
None
6
CaBe 2(PO 4) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Polyhalite and Hurlbutite Chemical Formula

While comparing Polyhalite and Hurlbutite 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 Hurlbutite chemical formula.

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Polyhalite and Hurlbutite Specific Gravity

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