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Vivianite
Vivianite

Polyhalite
Polyhalite



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Vivianite
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Polyhalite

Vivianite and Polyhalite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.64-2.70
-
{010} Perfect
-9999
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
 
Brittle
Soluble
-
2.78
Conchoidal
Perfect on {10 1 }; parting on {010}
3.5
K2Ca2Mg(SO4)4·2H2O

Vivianite and Polyhalite Chemical Formula

While comparing Vivianite 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 Vivianite and Polyhalite chemical formula.

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Vivianite and Polyhalite Specific Gravity

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