Smithsonite and Cinnabar Physical Properties

Smithsonite

Cinnabar

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1 Physical Properties

1.1 Tenacity

Brittle

Slightly sectile

1.2 Solubility

Not Available

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

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.652

1 7.18

1.5 Fracture

Uneven, Sub-Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

Perfect on [1011]

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

5-5.52-2.5

2 10

1.8 Chemical Composition

ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Smithsonite and Cinnabar Chemical Formula

While comparing Smithsonite and Cinnabar 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 Smithsonite and Cinnabar chemical formula.

Chemical formula of Smithsonite- ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Smithsonite and Cinnabar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Smithsonite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Smithsonite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Smithsonite is 2 whereas that of Cinnabar is 2.