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Bornite and Sillimanite Physical Properties


Sillimanite and Bornite Physical Properties


Physical Properties

Tenacity
Brittle   
Tough   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
5.06-5.08   
3.20-3.26   

Fracture
Uneven, Subconchoidal, Conchoidal, Brittle   
Splintery   

Cleavage
Poor on [111].   
{010} perfect   

Mohs Hardness
3-3.25   
6-7.5   

Chemical Composition
Cu5FeS4   
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Bornite and Sillimanite Chemical Formula

While comparing Bornite 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 Bornite and Sillimanite chemical formula.

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Bornite and Sillimanite Specific Gravity

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

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Red Gemstones


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