Kornerupine and Chromite Physical Properties

Kornerupine

Chromite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.454.5-4.8

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

Uneven

1.6 Cleavage

Good on {110}

None, parting may develop along {111}

1.7 Mohs Hardness

6.55.5

2 10

1.8 Chemical Composition

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Fe++Cr2O4

Kornerupine and Chromite Chemical Formula

While comparing Kornerupine 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 Kornerupine and Chromite chemical formula.

Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Chromite- Fe++Cr2O4

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Kornerupine and Chromite Specific Gravity

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