Cordierite and Atacamite Physical Properties

Cordierite

Atacamite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.57-2.663.745-3.776

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Conchoidal, Conchoidal, Brittle

1.6 Cleavage

Fair on {100}, poor on {001} and {010}

Perfect on {010}, fair on {101}

1.7 Mohs Hardness

7-7.53-3.5

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

Cu2Cl(OH)3

Cordierite and Atacamite Chemical Formula

While comparing Cordierite 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 Cordierite and Atacamite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Atacamite- Cu2Cl(OH)3

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Cordierite and Atacamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.