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Austinite
Austinite

Polyhalite
Polyhalite



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Austinite
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Polyhalite

Austinite and Polyhalite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Easily soluble in cold dilute HCl
-
4.12
Uneven
Good in two directions parallel to the prism faces {110}
4-4.5
CaZn(AsO4)(OH)
 
Brittle
Soluble
-
2.78
Conchoidal
Perfect on {10 1 }; parting on {010}
3.5
K2Ca2Mg(SO4)4·2H2O

Austinite and Polyhalite Chemical Formula

While comparing Austinite 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 Austinite and Polyhalite chemical formula.

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Austinite and Polyhalite Specific Gravity

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