Cinnabar and Bornite Physical Properties

Cinnabar

Bornite

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Physical Properties

Tenacity

Slightly sectile

Brittle

Solubility

1.04 x 10⁻²⁵ g per 100 ml water (Ksp at 25°C = 2 x 10⁻³²)

Durability

Specific Gravity

25.06-5.08

1 7.18

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Fracture

Uneven

Uneven, Subconchoidal, Conchoidal

Cleavage

Prismatic {10 1 0}, perfect

Poor on [111].

Mohs Hardness

2-2.53-3.25

2 10

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Chemical Composition

HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cu5FeS4

Cinnabar and Bornite Chemical Formula

While comparing Cinnabar 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 Cinnabar and Bornite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Bornite- Cu5FeS4

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Cinnabar and Bornite Specific Gravity

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