Cinnabar and Poudretteite Physical Properties

Cinnabar

Poudretteite

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1 Physical Properties

1.1 Tenacity

Slightly sectile

Brittle

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

22.51-2.53

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Conchoidal, Splintery

1.6 Cleavage

Prismatic {10 1 0}, perfect

None

1.7 Mohs Hardness

2-2.55

2 10

1.8 Chemical Composition

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

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Cinnabar and Poudretteite Chemical Formula

While comparing Cinnabar and Poudretteite 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 Poudretteite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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Cinnabar and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.