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Atacamite
Atacamite

Achroite
Achroite



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Atacamite
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Achroite

Atacamite and Achroite 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
 
-
-
-
2.90-3.40
Uneven, ConchoidalWalter Schumann
Indiscernible
7-7.5
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Atacamite and Achroite Chemical Formula

While comparing Atacamite and Achroite 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 Achroite chemical formula.

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Atacamite and Achroite Specific Gravity

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