Cordierite and Hematite Physical Properties

Cordierite

Hematite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.57-2.665.00-5.30

1 7.18

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Fracture

Subconchoidal, Conchoidal

Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

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

None, may show partings on {0001} and {10 1 1}

Mohs Hardness

7-7.56

2 10

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Chemical Composition

Mg2Al4Si5O18

Fe 2O 3Arthur Thomas , Gemstones (2009)

Cordierite and Hematite Chemical Formula

While comparing Cordierite and Hematite 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 Hematite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

Compare Blue Gemstones

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Cordierite Vs Riebeckite

Cordierite Vs Rosasite

Cordierite and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Hematite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 5.00-5.30 whereas that of Hematite is 5.00-5.30.