Anhydrite and Nepheline Physical Properties

Anhydrite

Nepheline

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.90-2.982.55-2.65

1 7.18

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Fracture

Conchoidal

Subconchoidal, Conchoidal

Cleavage

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

[1010] Poor

Mohs Hardness

3.55-6

2 10

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Chemical Composition

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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

Anhydrite and Nepheline Chemical Formula

While comparing Anhydrite and Nepheline 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 Anhydrite and Nepheline chemical formula.

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

Compare Blue Gemstones

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Anhydrite and Nepheline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Nepheline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Nepheline Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.55-2.65 whereas that of Nepheline is 2.55-2.65.