Hemimorphite and Lazurite Physical Properties

Hemimorphite

Lazurite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.30-3.502.75

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann, Conchoidal

Uneven, Conchoidal

Cleavage

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

Imperfect on {110}

Mohs Hardness

55.5

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,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Hemimorphite and Lazurite Chemical Formula

While comparing Hemimorphite and Lazurite 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 Lazurite 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 Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

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Hemimorphite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hemimorphite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 2.75 whereas that of Lazurite is 2.75.