Dumortierite and Vlasovite Physical Properties

Dumortierite

Vlasovite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Nearly insoluble in HCl and HNO₃

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.412.97

1 7.18

2.5 Fracture

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

Conchoidal, Brittle

2.6 Cleavage

Distinct on {100}, poor on {110}; parting on {001}

Distinct on {010}

2.7 Mohs Hardness

7-8.56

2 10

2.11 Chemical Composition

AlAl₆O₃BSi₃O₁₈

Not Available

Dumortierite and Vlasovite Chemical Formula

While comparing Dumortierite and Vlasovite 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 Dumortierite and Vlasovite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Dumortierite and Vlasovite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Vlasovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Vlasovite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.97 whereas that of Vlasovite is 2.97.