Nepheline and Cobaltite Physical Properties

Nepheline

Cobaltite

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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

2.55-2.656.3

1 7.18

1.5 Fracture

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

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

1.6 Cleavage

[1010] Poor

{100} Good, {010} Good, {001} Good

1.7 Mohs Hardness

5-65.5

2 10

1.8 Chemical Composition

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

CoAsSAnthony et al , Handbook of mineralogy (2001)

Nepheline and Cobaltite Chemical Formula

While comparing Nepheline and Cobaltite 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 Cobaltite chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

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Nepheline and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 6.3 whereas that of Cobaltite is 6.3.