Cordierite and Pyrargyrite Physical Properties

Cordierite

Pyrargyrite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.57-2.665.85

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle

1.6 Cleavage

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

Distinct on {10 1 1}, imperfect on {01 1 2}

1.7 Mohs Hardness

7-7.52.5-3

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cordierite and Pyrargyrite Chemical Formula

While comparing Cordierite and Pyrargyrite 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 Pyrargyrite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Pyrargyrite- Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Cordierite and Pyrargyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Pyrargyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Pyrargyrite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 5.85 whereas that of Pyrargyrite is 5.85.