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Shigaite and Sillimanite Physical Properties


Sillimanite and Shigaite Physical Properties


Physical Properties

Tenacity
Moderately flexible   
Tough   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.32   
3.20-3.26   

Fracture
Flexible Flexible fragments.   
Splintery   

Cleavage
Perfect on {0001}   
{010} perfect   

Mohs Hardness
2   
6-7.5   

Chemical Composition
Not Available   
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Shigaite and Sillimanite Chemical Formula

While comparing Shigaite 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 Shigaite and Sillimanite chemical formula.

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Shigaite and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Shigaite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Shigaite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Shigaite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.

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