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Sillimanite and Vivianite Physical Properties


Vivianite and Sillimanite Physical Properties


Physical Properties

Tenacity
Tough   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.20-3.26   
2.64-2.70   

Fracture
Splintery   
(e.g. graphite).   

Cleavage
{010} perfect   
{010} Perfect   

Mohs Hardness
6-7.5   
Not Available   

Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)   
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.   

Optical Properties >>
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Sillimanite and Vivianite Chemical Formula

While comparing Sillimanite and Vivianite 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 Vivianite chemical formula.

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Sillimanite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.

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