Beryllonite and Zoisite Physical Properties

Beryllonite

Zoisite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.79-2.873.20-3.50

1 7.18

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Fracture

Conchoidal

Uneven, Conchoidal, Even

Cleavage

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

Perfect {010} imperfect {100}

Mohs Hardness

5.5-66-7

2 10

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Chemical Composition

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

Ca₂Al₃(SiO₄)₃(OH)

Beryllonite and Zoisite Chemical Formula

While comparing Beryllonite and Zoisite 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 Zoisite chemical formula.

Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)

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Beryllonite and Zoisite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Beryllonite and Zoisite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryllonite and Zoisite Optical Properties during the identification of gemstone. Specific gravity of Beryllonite is 3.20-3.50 whereas that of Zoisite is 3.20-3.50.