Lazulite and Nepheline Physical Properties

Lazulite

Nepheline

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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

3.04-3.172.55-2.65

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones of the world (2001) More from other references

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

1.6 Cleavage

{001} Indistinct, {???} Indistinct

[1010] Poor

1.7 Mohs Hardness

5.55-6

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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

Lazulite and Nepheline Chemical Formula

While comparing Lazulite and Nepheline 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 Lazulite and Nepheline chemical formula.

Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

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Lazulite and Nepheline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Nepheline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Nepheline Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 2.55-2.65 whereas that of Nepheline is 2.55-2.65.