Nepheline and Hematite Physical Properties

Nepheline

Hematite

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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

2.55-2.655.00-5.30

1 7.18

1.5 Fracture

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

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

[1010] Poor

None, may show partings on {0001} and {10 1 1}

1.7 Mohs Hardness

5-66

2 10

1.8 Chemical Composition

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

Fe 2O 3Arthur Thomas , Gemstones (2009)

Nepheline and Hematite Chemical Formula

While comparing Nepheline and Hematite 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 Hematite chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

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Nepheline and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Hematite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 5.00-5.30 whereas that of Hematite is 5.00-5.30.