Atacamite and Pleonaste Physical Properties

Atacamite

Pleonaste

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.745-3.7763.80

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Brittle

Not Available

1.6 Cleavage

Perfect on {010}, fair on {101}

Not Available

1.7 Mohs Hardness

3-3.58

2 10

1.8 Chemical Composition

Cu2Cl(OH)3

(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Atacamite and Pleonaste Chemical Formula

While comparing Atacamite and Pleonaste 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 Pleonaste chemical formula.

Chemical formula of Atacamite- Cu2Cl(OH)3
Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Compare Green Gemstones

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Atacamite and Pleonaste Specific Gravity

Another important criteria for qualitative analysis of gemstones is Atacamite and Pleonaste Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Atacamite and Pleonaste Optical Properties during the identification of gemstone. Specific gravity of Atacamite is 3.80 whereas that of Pleonaste is 3.80.