Nepheline and Cinnabar Physical Properties

Nepheline

Cinnabar

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Physical Properties

Tenacity

Slightly sectile

Solubility

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

Durability

Specific Gravity

2.55-2.652

1 7.18

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Fracture

Subconchoidal, Conchoidal

Uneven

Cleavage

[1010] Poor

Prismatic {10 1 0}, perfect

Mohs Hardness

5-62-2.5

2 10

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Chemical Composition

Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

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

Nepheline and Cinnabar Chemical Formula

While comparing Nepheline 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 Nepheline and Cinnabar chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Red Gemstones

Nepheline Vs Realgar

Nepheline Vs Rhodizite

Nepheline Vs Rhodolite

Nepheline and Cinnabar Specific Gravity

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