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Topaz
Topaz

Polyhalite
Polyhalite



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Topaz
X
Polyhalite

Topaz and Polyhalite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.49-3.57
Subconchoidal, Uneven, Conchoidal
[001] Perfect
8
Al2SiO4(F,OH)2
 
Brittle
Soluble
-
2.78
Conchoidal
Perfect on {10 1 }; parting on {010}
3.5
K2Ca2Mg(SO4)4·2H2O

Topaz and Polyhalite Chemical Formula

While comparing Topaz 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 Topaz and Polyhalite chemical formula.

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Topaz and Polyhalite Specific Gravity

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