Apatite and Cerussite Physical Properties

Apatite

Cerussite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.23

6.46-6.57

1.5 Fracture

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven

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

1.6 Cleavage

[0001] indistinct, [1010] indistinct

Good [110] and [021]

1.7 Mohs Hardness

3-3.5

1.8 Chemical Composition

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

PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Apatite and Cerussite Chemical Formula

While comparing Apatite and Cerussite 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 Apatite and Cerussite chemical formula.

Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Cerussite- PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Apatite and Cerussite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Cerussite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Cerussite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 6.46-6.57 whereas that of Cerussite is 6.46-6.57.