Nepheline and Sphalerite Physical Properties

Nepheline

Sphalerite

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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

2.55-2.653.95-4.10

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

[1010] Poor

{110} Perfect, {110} Perfect, {110} Perfect

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.

(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Nepheline and Sphalerite Chemical Formula

While comparing Nepheline and Sphalerite 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 Sphalerite chemical formula.

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

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Nepheline and Sphalerite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Sphalerite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Sphalerite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 3.95-4.10 whereas that of Sphalerite is 3.95-4.10.