Nepheline and Creedite Physical Properties

Nepheline

Creedite

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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

2.55-2.652.70

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

[1010] Poor

Perfect on {100}

1.7 Mohs Hardness

5-64.5

2 10

1.8 Chemical Composition

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

Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Nepheline and Creedite Chemical Formula

While comparing Nepheline and Creedite 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 Creedite chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

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Nepheline and Creedite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Creedite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.70 whereas that of Creedite is 2.70.