Vesuvianite and Hercynite Physical Properties

Vesuvianite

Hercynite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.32-3.434.39

1 7.18

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Fracture

Conchoidal

Uneven

Cleavage

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

{111} Indistinct, {111} Indistinct, {111} Indistinct

Mohs Hardness

6-77.5-8

2 10

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Chemical Composition

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

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Vesuvianite and Hercynite Chemical Formula

While comparing Vesuvianite and Hercynite 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 Hercynite chemical formula.

Chemical formula of Vesuvianite- Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

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Vesuvianite and Hercynite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vesuvianite and Hercynite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vesuvianite and Hercynite Optical Properties during the identification of gemstone. Specific gravity of Vesuvianite is 4.39 whereas that of Hercynite is 4.39.