Nepheline and Bastnasite Physical Properties

Nepheline

Bastnasite

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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

2.55-2.654.95-5.0

1 7.18

1.5 Fracture

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

Uneven

1.6 Cleavage

[1010] Poor

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

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.

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

Nepheline and Bastnasite Chemical Formula

While comparing Nepheline and Bastnasite 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 Bastnasite chemical formula.

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

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Nepheline and Bastnasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Bastnasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Bastnasite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 4.95-5.0 whereas that of Bastnasite is 4.95-5.0.