Wulfenite and Cinnabar Physical Properties

Wulfenite

Cinnabar

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Physical Properties

Tenacity

Brittle

Slightly sectile

Solubility

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

Durability

Specific Gravity

6.50-7.002

1 7.18

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Fracture

Irregular, Conchoidal

Uneven

Cleavage

On {011}, distinct; on {001}, {013}, indistinct

Prismatic {10 1 0}, perfect

Mohs Hardness

32-2.5

2 10

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Chemical Composition

PbMoO 4Walter Schumann , Gemstones of the world (2001)

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

Wulfenite and Cinnabar Chemical Formula

While comparing Wulfenite 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 Wulfenite and Cinnabar chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Wulfenite and Cinnabar Specific Gravity

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