Friedelite and Nepheline Physical Properties

Friedelite

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

3.06-3.192.55-2.65

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{010} Perfect

[1010] Poor

1.7 Mohs Hardness

4-55-6

2 10

1.8 Chemical Composition

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

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

Friedelite and Nepheline Chemical Formula

While comparing Friedelite 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 Friedelite and Nepheline chemical formula.

Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Compare Red Gemstones

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Friedelite Vs Imperial Topaz

Friedelite and Nepheline Specific Gravity

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