Nepheline and Rutile Physical Properties

Nepheline

Rutile

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Insoluble in acids

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.654.20-4.30

1 7.18

1.5 Fracture

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

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

[1010] Poor

{110} good, 100 moderate, parting on {092} and {011}

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.

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Nepheline and Rutile Chemical Formula

While comparing Nepheline and Rutile 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 Rutile chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Nepheline and Rutile Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Rutile Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 4.20-4.30 whereas that of Rutile is 4.20-4.30.