Vesuvianite and Bytownite Physical Properties

Vesuvianite

Bytownite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.32-3.432.72-2.75

1 7.18

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Fracture

Conchoidal

Uneven

Cleavage

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

Perfect on [001], good on [010], imperfect on [110]

Mohs Hardness

6-76-6.5

2 10

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Chemical Composition

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

Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Vesuvianite and Bytownite Chemical Formula

While comparing Vesuvianite and Bytownite 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 Bytownite chemical formula.

Chemical formula of Vesuvianite- Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Vesuvianite and Bytownite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vesuvianite and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vesuvianite and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Vesuvianite is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.