Chromite and Gahnite Physical Properties

Chromite

Gahnite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.5-4.84.00-4.62

1 7.18

1.5 Fracture

Uneven

Conchoidal, Uneven

1.6 Cleavage

None, parting may develop along {111}

Indistinct parting on [111]

1.7 Mohs Hardness

5.57.5-8

2 10

1.8 Chemical Composition

Fe++Cr2O4

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Chromite and Gahnite Chemical Formula

While comparing Chromite and Gahnite 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 Gahnite chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Chromite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chromite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Chromite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.