Afghanite and Beryllonite Physical Properties

Afghanite

Beryllonite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.55-2.652.79-2.87

1 7.18

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Fracture

Conchoidal

Cleavage

Perfect {10 1 0}

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

Mohs Hardness

5.5-65.5-6

2 10

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Chemical Composition

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

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

Afghanite and Beryllonite Chemical Formula

While comparing Afghanite 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 Afghanite and Beryllonite chemical formula.

Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Afghanite Vs Glaucophane

Afghanite Vs Hauyne

Afghanite Vs Kainite

Afghanite and Beryllonite Specific Gravity

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