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Cordierite and Vivianite Physical Properties


Vivianite and Cordierite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.57-2.66   
2.64-2.70   

Fracture
Subconchoidal, Conchoidal, Brittle   
(e.g. graphite).   

Cleavage
Fair on {100}, poor on {001} and {010}   
{010} Perfect   

Mohs Hardness
7-7.5   
Not Available   

Chemical Composition
Mg2Al4Si5O18   
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.   

Optical Properties >>
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Cordierite and Vivianite Chemical Formula

While comparing Cordierite 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 Cordierite and Vivianite chemical formula.

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Cordierite and Vivianite Specific Gravity

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

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