Zinnwaldite and Nepheline Physical Properties

Zinnwaldite

Nepheline

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1 Physical Properties

1.1 Tenacity

Elastic

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.12.55-2.65

1 7.18

1.5 Fracture

Uneven

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Perfect basal {001}

[1010] Poor

1.7 Mohs Hardness

3.5-4.05-6

2 10

1.8 Chemical Composition

Not Available

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

Zinnwaldite and Nepheline Chemical Formula

While comparing Zinnwaldite 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 Zinnwaldite and Nepheline chemical formula.

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

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Zinnwaldite and Nepheline Specific Gravity

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