Forsterite and Nepheline Physical Properties

Forsterite

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

3.23-3.262.55-2.65

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

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

1.6 Cleavage

Perfect on {010} imperfect on {100}

[1010] Poor

1.7 Mohs Hardness

6.5-75-6

2 10

1.8 Chemical Composition

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Forsterite and Nepheline Chemical Formula

While comparing Forsterite 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 Forsterite and Nepheline chemical formula.

Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Compare Green Gemstones

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Forsterite Vs Grandidierite

Forsterite and Nepheline Specific Gravity

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