Cordierite and Ajoite Physical Properties

Cordierite

Ajoite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Decomposed by acids

1.3 Durability

Not Available

1.4 Specific Gravity

2.57-2.662.96

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Not Available

1.6 Cleavage

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

Perfect on {010}

1.7 Mohs Hardness

7-7.55

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

Cordierite and Ajoite Chemical Formula

While comparing Cordierite and Ajoite 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 Ajoite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

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Cordierite and Ajoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Ajoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Ajoite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.96 whereas that of Ajoite is 2.96.