Bertrandite and Beryllonite Physical Properties

Bertrandite

Beryllonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.59-2.602.79-2.87

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

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

1.6 Cleavage

{001} Perfect, {110} Distinct, {101} Distinct

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

1.7 Mohs Hardness

6-75.5-6

2 10

1.8 Chemical Composition

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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

Bertrandite and Beryllonite Chemical Formula

While comparing Bertrandite 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 Bertrandite and Beryllonite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bertrandite and Beryllonite Specific Gravity

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