Cordierite and Phosgenite Physical Properties

Cordierite

Phosgenite

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1 Physical Properties

1.1 Tenacity

Brittle

Sectile

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.57-2.666.13

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).

1.6 Cleavage

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

Distinct on {001} and {110}, indistinct on {100}

1.7 Mohs Hardness

7-7.52-3

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cordierite and Phosgenite Chemical Formula

While comparing Cordierite and Phosgenite 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 Phosgenite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Phosgenite- Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Cordierite and Phosgenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Phosgenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Phosgenite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 6.13 whereas that of Phosgenite is 6.13.