Zircon and Apatite Physical Properties

Zircon

Apatite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.93-4.733.16-3.23

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

{110} and {111}

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

7.55

2 10

1.8 Chemical Composition

ZrSiO₄

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

Zircon and Apatite Chemical Formula

While comparing Zircon 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 Zircon and Apatite chemical formula.

Chemical formula of Zircon- ZrSiO₄
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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Zircon and Apatite Specific Gravity

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