Neptunite and Andalusite Physical Properties

Neptunite

Andalusite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Brittle

3.19-3.23

Conchoidal

{110} good

5-6

KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

3.05-3.21

Uneven, Subconchoidal, Splintery

Good on {110}, poor on {100}

7.5

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

Neptunite and Andalusite Chemical Formula

While comparing Neptunite and Andalusite 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 Neptunite and Andalusite chemical formula.

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Neptunite and Andalusite Specific Gravity

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