Zoisite and Nepheline Physical Properties

Zoisite

Nepheline

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.20-3.502.55-2.65

1 7.18

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Fracture

Uneven, Conchoidal, Even

Subconchoidal, Conchoidal

Cleavage

Perfect {010} imperfect {100}

[1010] Poor

Mohs Hardness

6-75-6

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Zoisite and Nepheline Chemical Formula

While comparing Zoisite 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 Zoisite and Nepheline chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

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Zoisite and Nepheline Specific Gravity

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