Nepheline and Vishnevite Physical Properties

Nepheline

Vishnevite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.65Not Available

1 7.18

1.5 Fracture

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

Brittle, Uneven

1.6 Cleavage

[1010] Poor

Perfect

1.7 Mohs Hardness

5-65-6

2 10

1.8 Chemical Composition

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

Not Available

Nepheline and Vishnevite Chemical Formula

While comparing Nepheline and Vishnevite 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 Vishnevite chemical formula.

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

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Nepheline and Vishnevite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Vishnevite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Vishnevite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is Not Available whereas that of Vishnevite is Not Available.