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Bornite
Bornite

Ulexite
Ulexite



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Bornite
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Ulexite

Bornite and Ulexite Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

5.06-5.081.65-1.99
1 7.18
👆🏻

Fracture

Uneven, Subconchoidal, Conchoidal
Uneven

Cleavage

Poor on [111].
{010} Perfect, {110} Perfect

Mohs Hardness

3-3.252-2.5
2 10
👆🏻

Chemical Composition

Cu5FeS4
NaCaB 5O 6(OH) 6 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Bornite and Ulexite Chemical Formula

While comparing Bornite and Ulexite 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 Ulexite chemical formula.

  • Chemical formula of Bornite- Cu5FeS4
  • Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Bornite and Ulexite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bornite and Ulexite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bornite and Ulexite Optical Properties during the identification of gemstone. Specific gravity of Bornite is 1.65-1.99 whereas that of Ulexite is 1.65-1.99.