Rutile and Cordierite Physical Properties

Rutile

Cordierite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Insoluble in acids

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.20-4.302.57-2.66

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

{110} good, 100 moderate, parting on {092} and {011}

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

1.7 Mohs Hardness

6-6.57-7.5

2 10

1.8 Chemical Composition

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Mg2Al4Si5O18

Rutile and Cordierite Chemical Formula

While comparing Rutile and Cordierite 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 Rutile and Cordierite chemical formula.

Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Cordierite- Mg2Al4Si5O18

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Rutile and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rutile and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rutile and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Rutile is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.