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Cinnabar
Cinnabar

Shigaite
Shigaite



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Cinnabar
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Shigaite

Cinnabar and Shigaite Physical Properties

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Physical Properties

Tenacity

Slightly sectile
Moderately flexible

Solubility

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

Durability

-
-

Specific Gravity

22.32
1 7.18
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Fracture

Uneven
-

Cleavage

Prismatic {10 1 0}, perfect
Perfect on {0001}

Mohs Hardness

2-2.52
2 10
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Chemical Composition

HgSMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Pb6Cu3BiS4

Cinnabar and Shigaite Chemical Formula

While comparing Cinnabar and Shigaite 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 Shigaite chemical formula.

  • Chemical formula of Cinnabar- HgSMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Shigaite- Pb6Cu3BiS4

Cinnabar and Shigaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Shigaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Shigaite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 2.32 whereas that of Shigaite is 2.32.