Edenite and Cinnabar Physical Properties

Edenite

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

3.05-3.372

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

Good on (110)

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

5-62-2.5

2 10

1.8 Chemical Composition

NaCa2Mg5Si7AlO22(OH)2

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

Edenite and Cinnabar Chemical Formula

While comparing Edenite 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 Edenite and Cinnabar chemical formula.

Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Edenite Vs Agate Opal

Edenite Vs Aegirine

Edenite and Cinnabar Specific Gravity

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