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Sillimanite and Wulfenite Physical Properties


Wulfenite and Sillimanite Physical Properties


Physical Properties

Tenacity
Tough   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.20-3.26   
6.50-7.00   

Fracture
Splintery   
Irregular, Brittle, Conchoidal   

Cleavage
{010} perfect   
On {011}, distinct; on {001}, {013}, indistinct   

Mohs Hardness
6-7.5   
3   

Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)   
PbMoO 4Walter Schumann , Gemstones of the world (2001)   

Optical Properties >>
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Sillimanite and Wulfenite Chemical Formula

While comparing Sillimanite and Wulfenite 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 Sillimanite and Wulfenite chemical formula.

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Sillimanite and Wulfenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Wulfenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Wulfenite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 6.50-7.00 whereas that of Wulfenite is 6.50-7.00.

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