Bastnasite and Apatite Physical Properties

Bastnasite

Apatite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

4.95-5.03.16-3.23

1 7.18

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Fracture

Uneven

Conchoidal, Uneven, Conchoidal to uneven

Cleavage

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

[0001] indistinct, [1010] indistinct

Mohs Hardness

4-55

2 10

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Chemical Composition

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

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Bastnasite and Apatite Chemical Formula

While comparing Bastnasite and Apatite 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 Apatite chemical formula.

Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

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Bastnasite and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bastnasite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bastnasite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Bastnasite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.