Nepheline and Hardystonite Physical Properties

Nepheline

Hardystonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.653.396-3.443

1 7.18

1.5 Fracture

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

Brittle, Metallic

1.6 Cleavage

[1010] Poor

[001] good, [100] and [110] fair

1.7 Mohs Hardness

5-63-4

2 10

1.8 Chemical Composition

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

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Nepheline and Hardystonite Chemical Formula

While comparing Nepheline and Hardystonite 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 Hardystonite chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

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Nepheline and Hardystonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.