Legrandite and Hemimorphite Physical Properties

Legrandite

Hemimorphite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.98-4.043.30-3.50

1 7.18

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Fracture

Conchoidal

Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

Imperfect, poor one {100}

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

Mohs Hardness

4.5-55

2 10

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Chemical Composition

Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Legrandite and Hemimorphite Chemical Formula

While comparing Legrandite and Hemimorphite 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 Legrandite and Hemimorphite chemical formula.

Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Legrandite and Hemimorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Legrandite and Hemimorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Legrandite and Hemimorphite Optical Properties during the identification of gemstone. Specific gravity of Legrandite is 3.30-3.50 whereas that of Hemimorphite is 3.30-3.50.