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Mottramite and Sillimanite Physical Properties


Sillimanite and Mottramite Physical Properties


Physical Properties

Tenacity
Brittle   
Tough   

Solubility
Soluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
5.9   
3.20-3.26   

Fracture
Sub-Conchoidal, Brittle, Metallic   
Splintery   

Cleavage
None observed   
{010} perfect   

Mohs Hardness
3   
6-7.5   

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

Optical Properties >>
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Mottramite and Sillimanite Chemical Formula

While comparing Mottramite 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 Mottramite and Sillimanite chemical formula.

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Mottramite and Sillimanite Specific Gravity

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

Brown Gemstones

Brown Gemstones


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