Apatite and Prase Physical Properties

Apatite

Prase

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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

3.16-3.232.64-2.69

1 7.18

1.5 Fracture

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

Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)

1.6 Cleavage

[0001] indistinct, [1010] indistinct

Not Available

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

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

SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Apatite and Prase Chemical Formula

While comparing Apatite and Prase 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 Prase 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 Prase- SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Apatite and Prase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Prase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Prase Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.64-2.69 whereas that of Prase is 2.64-2.69.