Sylvite and Beryllonite Physical Properties

Sylvite

Beryllonite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.9932.79-2.87

1 7.18

1.5 Fracture

Uneven, Brittle

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

1.6 Cleavage

Perfect on [100], [010], [001]

{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces

1.7 Mohs Hardness

2.55.5-6

2 10

1.8 Chemical Composition

Not Available

NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Sylvite and Beryllonite Chemical Formula

While comparing Sylvite and Beryllonite 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 Sylvite and Beryllonite chemical formula.

Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Sylvite and Beryllonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sylvite and Beryllonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sylvite and Beryllonite Optical Properties during the identification of gemstone. Specific gravity of Sylvite is 2.79-2.87 whereas that of Beryllonite is 2.79-2.87.