Phosgenite and Cordierite Physical Properties

Phosgenite

Cordierite

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.132.57-2.66

1 7.18

1.5 Fracture

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

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

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

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

1.7 Mohs Hardness

2-37-7.5

2 10

1.8 Chemical Composition

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

Mg2Al4Si5O18

Phosgenite and Cordierite Chemical Formula

While comparing Phosgenite 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 Phosgenite and Cordierite chemical formula.

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

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Phosgenite and Cordierite Specific Gravity

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