Nepheline and Aragonite Physical Properties

Nepheline

Aragonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.652.93-2.96

1 7.18

1.5 Fracture

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

1.6 Cleavage

[1010] Poor

Distinct on {010}, imperfect {110} and {011}

1.7 Mohs Hardness

5-63.5-4

2 10

1.8 Chemical Composition

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

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Nepheline and Aragonite Chemical Formula

While comparing Nepheline and Aragonite 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 Aragonite chemical formula.

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

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Nepheline and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.