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Pyrophyllite
Pyrophyllite

Bornite
Bornite



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Pyrophyllite
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Bornite

Pyrophyllite and Bornite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

2.65-2.905.06-5.08
1 7.18
👆🏻

Fracture

-
Uneven, Subconchoidal, Conchoidal

Cleavage

{001} Perfect
Poor on [111].

Mohs Hardness

-99993-3.25
2 10
👆🏻

Chemical Composition

Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Cu5FeS4

Pyrophyllite and Bornite Chemical Formula

While comparing Pyrophyllite and Bornite 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 Pyrophyllite and Bornite chemical formula.

  • Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Bornite- Cu5FeS4

Pyrophyllite and Bornite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Bornite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Bornite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 5.06-5.08 whereas that of Bornite is 5.06-5.08.