Cinnabar and Vivianite Physical Properties

Cinnabar

Vivianite

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1 Physical Properties

1.1 Tenacity

Slightly sectile

Not Available

1.2 Solubility

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

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

22.64-2.70

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

(e.g. graphite).

1.6 Cleavage

Prismatic {10 1 0}, perfect

{010} Perfect

1.7 Mohs Hardness

2-2.5Not Available

2 10

1.8 Chemical Composition

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

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Cinnabar and Vivianite Chemical Formula

While comparing Cinnabar and Vivianite 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 Vivianite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Cinnabar and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.