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Malachite
Malachite

Gahnite
Gahnite



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Malachite
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Gahnite

Malachite and Gahnite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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3.25-4.10
Conchoidal, Uneven
Perfect on { 2 01} fair on {010}
3.5-4
Cu2CO3(OH)2
 
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4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Malachite and Gahnite Chemical Formula

While comparing Malachite and Gahnite 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 Malachite and Gahnite chemical formula.

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Malachite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Malachite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite Vs Gahnite during the identification of gemstone. Specific gravity of Malachite is whereas that of Gahnite is .