Purpurite and Nepheline Physical Properties

Purpurite

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

3.2-3.42.55-2.65

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

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

1.6 Cleavage

[100] [001] perfect

[1010] Poor

1.7 Mohs Hardness

4-4.55-6

2 10

1.8 Chemical Composition

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

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

Purpurite and Nepheline Chemical Formula

While comparing Purpurite 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 Purpurite and Nepheline chemical formula.

Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Compare Violet Gemstones

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Purpurite Vs Sapphire

Purpurite and Nepheline Specific Gravity

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