Cinnabar and Petalite Physical Properties

Cinnabar

Petalite

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1 Physical Properties

1.1 Tenacity

Slightly sectile

Brittle

1.2 Solubility

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

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

22.40

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

1.6 Cleavage

Prismatic {10 1 0}, perfect

Perfect on {001}, poor on {201} with 38.5° angle between the two

1.7 Mohs Hardness

2-2.56-6.5

2 10

1.8 Chemical Composition

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

LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cinnabar and Petalite Chemical Formula

While comparing Cinnabar and Petalite 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 Petalite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Cinnabar and Petalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Petalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Petalite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 2.40 whereas that of Petalite is 2.40.