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Pyrophyllite and Gahnite Physical Properties


Gahnite and Pyrophyllite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.65-2.90   
4.00-4.62   

Fracture
Gemstones (2009), Flexible Flexible fragments.   
Conchoidal, Uneven   

Cleavage
{001} Perfect   
Indistinct parting on [111]   

Mohs Hardness
Not Available   
7.5-8   

Chemical Composition
Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Pyrophyllite and Gahnite Chemical Formula

While comparing Pyrophyllite and Gahnite 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 Pyrophyllite and Gahnite chemical formula.

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Pyrophyllite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.

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