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Pollucite
Pollucite

Bornite
Bornite



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Pollucite
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Bornite

Pollucite and Bornite Physical Properties

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Physical Properties

Tenacity

Brittle
Brittle

Solubility

Readily soluble in HF
-

Durability

-
-

Specific Gravity

2.86-2.945.06-5.08
1 7.18
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Fracture

Conchoidal, Uneven
Uneven, Subconchoidal, Conchoidal

Cleavage

None observed
Poor on [111].

Mohs Hardness

6.5-73-3.25
2 10
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Chemical Composition

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Cu5FeS4

Pollucite and Bornite Chemical Formula

While comparing Pollucite 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 Pollucite and Bornite chemical formula.

  • Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
  • Chemical formula of Bornite- Cu5FeS4

Pollucite and Bornite Specific Gravity

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