Bastnasite and Nepheline Physical Properties

Bastnasite

Nepheline

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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

4.95-5.02.55-2.65

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

Imperfect to indistinct on {10 1 0}, parting on {0001}

[1010] Poor

1.7 Mohs Hardness

4-55-6

2 10

1.8 Chemical Composition

(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Bastnasite and Nepheline Chemical Formula

While comparing Bastnasite 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 Bastnasite and Nepheline chemical formula.

Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael 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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Bastnasite and Nepheline Specific Gravity

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