Cinnabar and Malachite Physical Properties

Cinnabar

Malachite

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1 Physical Properties

1.1 Tenacity

Slightly sectile

Not Available

1.2 Solubility

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

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

23.25-4.10

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

Prismatic {10 1 0}, perfect

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

2-2.53.5-4

2 10

1.8 Chemical Composition

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

Cu₂CO₃(OH)₂

Cinnabar and Malachite Chemical Formula

While comparing Cinnabar and Malachite 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 Malachite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Malachite- Cu₂CO₃(OH)₂

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Cinnabar and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Malachite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.25-4.10 whereas that of Malachite is 3.25-4.10.