Andalusite and Vlasovite Physical Properties

Andalusite

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

3.05-3.212.97

1 7.18

1.5 Fracture

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

Conchoidal, Brittle

1.6 Cleavage

Good on {110}, poor on {100}

Distinct on {010}

1.7 Mohs Hardness

7.56

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Not Available

Andalusite and Vlasovite Chemical Formula

While comparing Andalusite 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 Andalusite and Vlasovite chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Andalusite and Vlasovite Specific Gravity

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