Beryllonite and Apatite Physical Properties

Beryllonite

Apatite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.79-2.873.16-3.23

1 7.18

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Fracture

Conchoidal

Conchoidal, Uneven, Conchoidal to uneven

Cleavage

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

[0001] indistinct, [1010] indistinct

Mohs Hardness

5.5-65

2 10

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Chemical Composition

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

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Beryllonite and Apatite Chemical Formula

While comparing Beryllonite and Apatite 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 Apatite chemical formula.

Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Colorless Gems

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Beryllonite Vs Hambergite

Beryllonite Vs Herderite

Beryllonite and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Beryllonite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryllonite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Beryllonite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.