Shigaite and Cinnabar Physical Properties

Shigaite

Cinnabar

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

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

2.322

1 7.18

1.5 Fracture

Flexible Flexible fragments.

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

Perfect on {0001}

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

22-2.5

2 10

1.8 Chemical Composition

Not Available

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

Shigaite and Cinnabar Chemical Formula

While comparing Shigaite 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 Shigaite and Cinnabar chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Shigaite and Cinnabar Specific Gravity

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