Cinnabar and Omphacite Physical Properties

Cinnabar

Omphacite

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Physical Properties

Tenacity

Slightly sectile

Solubility

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

Durability

Specific Gravity

23.16-3.43

1 7.18

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Fracture

Uneven

Uneven, Conchoidal

Cleavage

Prismatic {10 1 0}, perfect

{110} Good, {110} Good

Mohs Hardness

2-2.55-6

2 10

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Chemical Composition

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

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Cinnabar and Omphacite Chemical Formula

While comparing Cinnabar and Omphacite 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 Omphacite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Compare Red Gemstones

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Cinnabar and Omphacite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Omphacite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Omphacite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.16-3.43 whereas that of Omphacite is 3.16-3.43.