Hematite and Cordierite Physical Properties

Hematite

Cordierite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

5.00-5.302.57-2.66

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann, Conchoidal

Subconchoidal, Conchoidal

Cleavage

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

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

Mohs Hardness

67-7.5

2 10

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Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

Mg2Al4Si5O18

Hematite and Cordierite Chemical Formula

While comparing Hematite 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 Hematite and Cordierite chemical formula.

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

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Hematite and Cordierite Specific Gravity

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