Rutile and Apatite Physical Properties

Rutile

Apatite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Insoluble in acids

4.20-4.30

Uneven, Conchoidal

{110} good, 100 moderate, parting on {092} and {011}

6-6.5

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

3.16-3.23

Conchoidal, Uneven, Conchoidal to uneven

[0001] indistinct, [1010] indistinct

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

Rutile and Apatite Chemical Formula

While comparing Rutile 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 Rutile and Apatite chemical formula.

Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
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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Rutile and Apatite Specific Gravity

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