Achroite and Atacamite Physical Properties

Achroite

Atacamite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

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.

Brittle

3.745-3.776

Conchoidal

Perfect on {010}, fair on {101}

3-3.5

Cu2Cl(OH)3

Achroite and Atacamite Chemical Formula

While comparing Achroite 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 Achroite and Atacamite chemical formula.

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Achroite and Atacamite Specific Gravity

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