Iolite and Bornite Physical Properties

Iolite

Bornite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.7

5.06-5.08

1.5 Fracture

Not Available

Uneven, Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

3,1

Poor on [111].

1.7 Mohs Hardness

7-7.5

3-3.25

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

Cu5FeS4

Iolite and Bornite Chemical Formula

While comparing Iolite 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 Iolite and Bornite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Bornite- Cu5FeS4

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Iolite and Bornite Specific Gravity

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