Dolomite and Nepheline Physical Properties

Dolomite

Nepheline

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Poorly soluble in dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.80-2.952.55-2.65

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect on {10 1 1}, rhombohedral cleavage

[1010] Poor

1.7 Mohs Hardness

3.5-45-6

2 10

1.8 Chemical Composition

CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Dolomite and Nepheline Chemical Formula

While comparing Dolomite and Nepheline 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 Dolomite and Nepheline chemical formula.

Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

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Dolomite and Nepheline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dolomite and Nepheline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dolomite and Nepheline Optical Properties during the identification of gemstone. Specific gravity of Dolomite is 2.55-2.65 whereas that of Nepheline is 2.55-2.65.