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Atacamite
Atacamite

Neptunite
Neptunite



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Atacamite
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Neptunite

Atacamite and Neptunite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.745-3.776
Conchoidal
Perfect on {010}, fair on {101}
3-3.5
Cu2Cl(OH)3
 
Brittle
-
-
3.19-3.23
Conchoidal
{110} good
5-6
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)

Atacamite and Neptunite Chemical Formula

While comparing Atacamite and Neptunite 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 Atacamite and Neptunite chemical formula.

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Atacamite and Neptunite Specific Gravity

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