Brookite and Chromite Physical Properties

Brookite

Chromite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.87-4.144.5-4.8

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

Uneven

1.6 Cleavage

Poor on {120}, in traces on {001}

None, parting may develop along {111}

1.7 Mohs Hardness

5.5-65.5

2 10

1.8 Chemical Composition

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Fe++Cr2O4

Brookite and Chromite Chemical Formula

While comparing Brookite and Chromite 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 Brookite and Chromite chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Chromite- Fe++Cr2O4

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Brookite and Chromite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Chromite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 4.5-4.8 whereas that of Chromite is 4.5-4.8.