Chromite and Hematite Physical Properties

Chromite

Hematite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

4.5-4.85.00-5.30

1 7.18

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Fracture

Uneven

Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

None, parting may develop along {111}

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

Mohs Hardness

5.56

2 10

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Chemical Composition

Fe++Cr2O4

Fe 2O 3Arthur Thomas , Gemstones (2009)

Chromite and Hematite Chemical Formula

While comparing Chromite 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 Chromite and Hematite chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

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Chromite and Hematite Specific Gravity

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