Cordierite and Hemimorphite Physical Properties

Cordierite

Hemimorphite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

2.57-2.663.30-3.50

1 7.18

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Fracture

Subconchoidal, Conchoidal

Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

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

Perfect on {110}, poor on {101}, {001} rare

Mohs Hardness

7-7.55

2 10

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Chemical Composition

Mg2Al4Si5O18

Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cordierite and Hemimorphite Chemical Formula

While comparing Cordierite and Hemimorphite 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 Hemimorphite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Cordierite Vs Plumbogummite

Cordierite Vs Riebeckite

Cordierite Vs Rosasite

Cordierite and Hemimorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Hemimorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Hemimorphite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.30-3.50 whereas that of Hemimorphite is 3.30-3.50.