Polyhalite and Bornite Physical Properties

Polyhalite

Bornite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.785.06-5.08

1 7.18

1.5 Fracture

Conchoidal, Brittle

Uneven, Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

Perfect on {10 1 }; parting on {010}

Poor on [111].

1.7 Mohs Hardness

3.53-3.25

2 10

1.8 Chemical Composition

Not Available

Cu5FeS4

Polyhalite and Bornite Chemical Formula

While comparing Polyhalite 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 Polyhalite and Bornite chemical formula.

Chemical formula of Bornite- Cu5FeS4

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Polyhalite Vs Jacinth

Polyhalite Vs Vanadinite

Polyhalite Vs Heliotrope

Polyhalite and Bornite Specific Gravity

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