Sphalerite and Cinnabar Physical Properties

Sphalerite

Cinnabar

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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

3.95-4.102

1 7.18

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Fracture

Uneven

Cleavage

{110} Perfect, {110} Perfect, {110} Perfect

Prismatic {10 1 0}, perfect

Mohs Hardness

3.5-42-2.5

2 10

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Chemical Composition

(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Sphalerite and Cinnabar Chemical Formula

While comparing Sphalerite 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 Sphalerite and Cinnabar chemical formula.

Chemical formula of Sphalerite- (Zn,Fe)SMichael 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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Sphalerite and Cinnabar Specific Gravity

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