Nepouite and Andalusite Physical Properties

Nepouite

Andalusite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.18-3.243.05-3.21

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

perfect on {001}

Good on {110}, poor on {100}

1.7 Mohs Hardness

27.5

2 10

1.8 Chemical Composition

Not Available

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

Nepouite and Andalusite Chemical Formula

While comparing Nepouite 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 Nepouite and Andalusite chemical formula.

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

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Nepouite and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepouite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepouite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Nepouite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.