Azurite and Atacamite Physical Properties

Azurite

Atacamite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.70-3.903.745-3.776

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Conchoidal, Conchoidal, Brittle

1.6 Cleavage

Perfect on {011}, fair on {100}, poor on {110}

Perfect on {010}, fair on {101}

1.7 Mohs Hardness

3.5-43-3.5

2 10

1.8 Chemical Composition

Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cu2Cl(OH)3

Azurite and Atacamite Chemical Formula

While comparing Azurite and Atacamite 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 Azurite and Atacamite chemical formula.

Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Atacamite- Cu2Cl(OH)3

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Azurite and Atacamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Azurite and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Azurite and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Azurite is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.