Nepheline and Williamsite Physical Properties

Nepheline

Williamsite

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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

2.55-2.652.51-2.63

1 7.18

1.5 Fracture

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

Conchoidal, Conchoidal, Handbook of mineralogy (2001)

1.6 Cleavage

[1010] Poor

Not Available

1.7 Mohs Hardness

5-64

2 10

1.8 Chemical Composition

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

(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Nepheline and Williamsite Chemical Formula

While comparing Nepheline and Williamsite 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 Williamsite chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

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Nepheline and Williamsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Williamsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Williamsite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.51-2.63 whereas that of Williamsite is 2.51-2.63.