Nepheline and Brookite Physical Properties

Nepheline

Brookite

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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

2.55-2.653.87-4.14

1 7.18

1.5 Fracture

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

1.6 Cleavage

[1010] Poor

Poor on {120}, in traces on {001}

1.7 Mohs Hardness

5-65.5-6

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) More from other references

Nepheline and Brookite Chemical Formula

While comparing Nepheline and Brookite 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 Brookite chemical formula.

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

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Nepheline and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Brookite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 3.87-4.14 whereas that of Brookite is 3.87-4.14.