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Beryllonite and Cryolite Physical Properties


Cryolite and Beryllonite Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Not Available   
Soluble   

Durability
Not Available   
Not Available   

Specific Gravity
2.79-2.87   
2.97   

Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal   
Uneven   

Cleavage
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces   
None observed   

Mohs Hardness
5.5-6   
2.5   

Chemical Composition
NaBePO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
Na 3AlF 6Ulrich Henn and Claudio C.   

Optical Properties >>
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Beryllonite and Cryolite Chemical Formula

While comparing Beryllonite and Cryolite 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 Beryllonite and Cryolite chemical formula.

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Beryllonite and Cryolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Beryllonite and Cryolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryllonite and Cryolite Optical Properties during the identification of gemstone. Specific gravity of Beryllonite is 2.97 whereas that of Cryolite is 2.97.

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