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Bornite
Bornite

Pyrope
Pyrope



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Bornite
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Pyrope

Bornite and Pyrope Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

-
insoluble in water

Durability

-
-

Specific Gravity

5.06-5.083.62-3.87
1 7.18
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Fracture

Uneven, Subconchoidal, Conchoidal
Conchoidal

Cleavage

Poor on [111].
None

Mohs Hardness

3-3.257-7.5
2 10
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Chemical Composition

Cu5FeS4
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Bornite and Pyrope Chemical Formula

While comparing Bornite and Pyrope 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 Pyrope chemical formula.

  • Chemical formula of Bornite- Cu5FeS4
  • Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Bornite and Pyrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bornite and Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bornite and Pyrope Optical Properties during the identification of gemstone. Specific gravity of Bornite is 3.62-3.87 whereas that of Pyrope is 3.62-3.87.