Cinnabar and Phenakite Physical Properties

Cinnabar

Phenakite

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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

22.90-2.98

1 7.18

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Fracture

Uneven

Conchoidal, ConchoidalWalter Schumann

Cleavage

Prismatic {10 1 0}, perfect

Distinct on {11 2 0}, imperfect on {10 1 1}

Mohs Hardness

2-2.57.5-8

2 10

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Chemical Composition

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

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cinnabar and Phenakite Chemical Formula

While comparing Cinnabar and Phenakite 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 Phenakite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Cinnabar and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.