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Nepouite
Nepouite

Sillimanite
Sillimanite



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Nepouite
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Sillimanite

Nepouite and Sillimanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.18-3.24
-
perfect on {001}
2
Ni3(Si2O5)(OH)4
 
Tough
-
-
3.20-3.26
Splintery
{010} perfect
6-7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Nepouite and Sillimanite Chemical Formula

While comparing Nepouite and Sillimanite 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 Sillimanite chemical formula.

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Nepouite and Sillimanite Specific Gravity

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