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Bornite
Bornite

Danburite
Danburite



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Bornite
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Bornite and Danburite Physical Properties

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Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

5.06-5.082.97-3.03
1 7.18
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Fracture

Uneven, Subconchoidal, Conchoidal
Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

Poor on [111].
{001} Poor

Mohs Hardness

3-3.257
2 10
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Chemical Composition

Cu5FeS4
CaB 2(SiO 4) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Bornite and Danburite Chemical Formula

While comparing Bornite and Danburite 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 Bornite and Danburite chemical formula.

  • Chemical formula of Bornite- Cu5FeS4
  • Chemical formula of Danburite- CaB 2(SiO 4) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Bornite and Danburite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bornite and Danburite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bornite and Danburite Optical Properties during the identification of gemstone. Specific gravity of Bornite is 2.97-3.03 whereas that of Danburite is 2.97-3.03.