Cordierite and Brookite Physical Properties

Cordierite

Brookite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Brittle

2.57-2.66

Subconchoidal, Conchoidal

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

7-7.5

Mg2Al4Si5O18

Brittle

3.87-4.14

Subconchoidal, Conchoidal

Poor on {120}, in traces on {001}

5.5-6

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cordierite and Brookite Chemical Formula

While comparing Cordierite and Brookite 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 Brookite chemical formula.

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Cordierite and Brookite Specific Gravity

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