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Phenakite and Poudretteite Physical Properties


Poudretteite and Phenakite Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.90-2.98   
2.51-2.53   

Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle   
Conchoidal, Splintery   

Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}   
None   

Mohs Hardness
7.5-8   
5   

Chemical Composition
Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Phenakite and Poudretteite Chemical Formula

While comparing Phenakite and Poudretteite 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 Phenakite and Poudretteite chemical formula.

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Phenakite and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.

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