Danburite and Chromite Physical Properties

Danburite

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

2.97-3.034.5-4.8

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

Uneven

1.6 Cleavage

{001} Poor

None, parting may develop along {111}

1.7 Mohs Hardness

75.5

2 10

1.8 Chemical Composition

CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Fe++Cr2O4

Danburite and Chromite Chemical Formula

While comparing Danburite 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 Danburite and Chromite chemical formula.

Chemical formula of Danburite- CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Chromite- Fe++Cr2O4

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Danburite and Chromite Specific Gravity

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