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Nepouite
Nepouite

Cinnabar
Cinnabar



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Nepouite
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Cinnabar

Nepouite and Cinnabar Physical Properties

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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

3.18-3.242
1 7.18
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Fracture

-
Uneven

Cleavage

perfect on {001}
Prismatic {10 1 0}, perfect

Mohs Hardness

22-2.5
2 10
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Chemical Composition

Ni3(Si2O5)(OH)4
HgSMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Nepouite and Cinnabar Chemical Formula

While comparing Nepouite 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 Nepouite and Cinnabar chemical formula.

  • Chemical formula of Nepouite- Ni3(Si2O5)(OH)4
  • Chemical formula of Cinnabar- HgSMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Nepouite and Cinnabar Specific Gravity

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