Nepheline and Marcasite Physical Properties

Nepheline

Marcasite

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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

2.55-2.654.80-4.90

1 7.18

1.5 Fracture

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

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

[1010] Poor

{010} Indistinct

1.7 Mohs Hardness

5-66-6.5

2 10

1.8 Chemical Composition

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

FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Nepheline and Marcasite Chemical Formula

While comparing Nepheline and Marcasite 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 Marcasite chemical formula.

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

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Nepheline and Marcasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Marcasite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 4.80-4.90 whereas that of Marcasite is 4.80-4.90.