Purpurite and Cinnabar Physical Properties

Purpurite

Cinnabar

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1 Physical Properties

1.1 Tenacity

Not Available

Slightly sectile

1.2 Solubility

Not Available

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

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.42

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

[100] [001] perfect

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

4-4.52-2.5

2 10

1.8 Chemical Composition

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

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

Purpurite and Cinnabar Chemical Formula

While comparing Purpurite 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 Purpurite and Cinnabar chemical formula.

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

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Purpurite and Cinnabar Specific Gravity

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