Galena and Cinnabar Physical Properties

Galena

Cinnabar

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1 Physical Properties

1.1 Tenacity

Brittle

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

6.232

1 7.18

1.5 Fracture

Subconchoidal, Brittle, Metallic

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

Cubic perfect on [001], parting on [111]

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

2.5-2.752-2.5

2 10

1.8 Chemical Composition

PbS

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

Galena and Cinnabar Chemical Formula

While comparing Galena 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 Galena and Cinnabar chemical formula.

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

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Galena Vs Amber

Galena Vs Achroite

Galena Vs Lehsunia

Galena and Cinnabar Specific Gravity

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