Vesuvianite and Prehnite Physical Properties

Vesuvianite

Prehnite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.32-3.432.80-2.95

1 7.18

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Fracture

Conchoidal

Uneven

Cleavage

Poor on {110} and {100} very poor on {001}

Distinct on [001]

Mohs Hardness

6-76-6.5

2 10

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Chemical Composition

Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4

Ca₂Al₂Si₃O₁₂(OH)

Vesuvianite and Prehnite Chemical Formula

While comparing Vesuvianite and Prehnite 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 Vesuvianite and Prehnite chemical formula.

Chemical formula of Vesuvianite- Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
Chemical formula of Prehnite- Ca₂Al₂Si₃O₁₂(OH)

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Vesuvianite Vs Radiolarite

Vesuvianite and Prehnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vesuvianite and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vesuvianite and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Vesuvianite is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.