Hemimorphite and Elbaite Physical Properties

Hemimorphite

Elbaite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.30-3.502.90-3.10

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann, Conchoidal

Uneven, Conchoidal

Cleavage

Perfect on {110}, poor on {101}, {001} rare

Poor/indistinct on {1120} and {1011}

Mohs Hardness

2 10

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Chemical Composition

Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

Hemimorphite and Elbaite Chemical Formula

While comparing Hemimorphite and Elbaite 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 Hemimorphite and Elbaite chemical formula.

Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

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Hemimorphite and Elbaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hemimorphite and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.