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Malachite and Sillimanite Physical Properties


Sillimanite and Malachite Physical Properties


Physical Properties

Tenacity
Not Available   
Tough   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.25-4.10   
3.20-3.26   

Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven   
Splintery   

Cleavage
Perfect on { 2 01} fair on {010}   
{010} perfect   

Mohs Hardness
3.5-4   
6-7.5   

Chemical Composition
Cu2CO3(OH)2   
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Malachite and Sillimanite Chemical Formula

While comparing Malachite 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 Malachite and Sillimanite chemical formula.

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Malachite and Sillimanite Specific Gravity

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

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