Nepheline and Albite Physical Properties

Nepheline

Albite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.652.60-2.65

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

1.6 Cleavage

[1010] Poor

Perfect on {001}, very good on {010}, imperfect on {110}

1.7 Mohs Hardness

5-66-6.5

2 10

1.8 Chemical Composition

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

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Nepheline and Albite Chemical Formula

While comparing Nepheline and Albite 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 Albite chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Nepheline and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Albite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.60-2.65 whereas that of Albite is 2.60-2.65.